Year: 2025

Specification
Electrical Specifications
Power Input: Based on the wide range of Hirschmann’s products in the industrial field, the module is most likely to be compatible with common industrial power supply voltages, such as 24V DC, which is very common in industrial environments, making the module easily compatible with the existing power supply systems in most factories, without the need for additional complex power conversion equipment. For example, an automated production line network in an automotive factory can be powered directly from an existing 24V DC power supply. Considering the voltage fluctuations that may exist in industrial power supply environments, the power input range may be designed between 20.4V DC and 28.8V DC to ensure that the module can still maintain normal operation in the event of voltage instability.

Power Consumption: Given the need to support Ethernet communication and the possible port configurations, the power consumption of the module is estimated to be around 10W. Taking a common 8-port module as an example, the power consumption of each port in normal operation is about 1W, plus the power consumed by the internal circuitry of the module for data calculation, processing and other functions, the overall power consumption is at this level. This power consumption ensures that the module can efficiently perform all kinds of network tasks without adding too much burden to the power supply system, which is a good balance between industrial energy-saving requirements and the need for stable operation of equipment.

Port specifications
RJ45 port: If the module is equipped with an RJ45 port, the physical interface should comply with the IEEE 802.3 standard. The port’s transmission rate is 10/100 Mbps adaptive, automatically detecting the rate of the connected device and adapting it. In short-distance data transmission scenarios such as intra-office network connections, RJ45 ports can help devices quickly establish connections to the network. When using Cat5e or above cable, the theoretical transmission distance of this port can reach up to 100 metres, which is sufficient to meet the length requirements of general indoor network cabling.

Fibre-optic port (if available): If the module has a fibre-optic port, such as an SFP port, it may support both multi-mode fibre and single-mode fibre. Multi-mode optical fiber is suitable for short-distance high-speed data transmission scenarios, such as network connection within a building. When using OM3 multi-mode optical fiber, the transmission distance can be up to about 300 meters, which can meet the needs of short-distance high-speed connection between different buildings within a general campus network. Single-mode fibre is more suitable for long-distance transmission, and plays a key role in connecting industrial sites that are far away from each other or cross-city network connections, with transmission distances of up to tens of kilometres, such as the network connection between factories of large industrial groups distributed in different cities can be achieved with the help of single-mode fibre.

Network Specifications
Protocol support: The module undoubtedly supports IEEE 802.3 Ethernet protocol, which is the basic standard for Ethernet communication and ensures smooth communication with all kinds of devices complying with this standard. At the same time, it may support VLAN (Virtual Local Area Network) protocols, such as IEEE 802.1Q, which allows users to logically segment their networks to improve network security and management efficiency. In a large enterprise network architecture, dividing the network of different departments through VLANs can achieve data isolation, avoid inter-departmental data interference, and facilitate traffic control and rational allocation of network resources. In addition, it may also support Spanning Tree Protocol (STP, IEEE 802.1D), which is used to prevent loops in the network, ensure the stability of the network topology, and maintain the normal operation of the network by avoiding problems such as broadcast storms due to loops in complex network layouts.

MAC Address: Each port has a globally unique 48-bit MAC address, which is used to accurately identify the device in the network and ensure that data can be accurately transmitted to the target port. the uniqueness of the MAC address is assigned by the IEEE, which is like an exclusive ID card for the device, and is not duplicated globally, which strongly guarantees the accuracy and traceability of the network communication.

Environmental specifications
Operating temperature: As an industrial grade product, the module has excellent temperature adaptability, with a possible operating temperature range of – 40°C to + 70°C. This wide temperature range makes it suitable for use in a wide range of harsh industrial environments. Whether in an outdoor industrial facility in the cold north or on a factory floor in the hot south, the modules work well. For example, in the cold storage environment of the cold chain logistics industry, the module is able to operate stably at low temperatures to ensure the normal communication of the monitoring network; in the high-temperature steel smelting workshop, it is also able to withstand high temperatures and maintain the stability of the network connection.

Storage Temperature: The storage temperature range is likely to be wider, roughly – 45°C to + 85°C. This means that even when the equipment is not in use and is in storage, the module is able to maintain its performance in the face of extreme temperatures, ensuring that it will function properly when it is put into use.

Relative humidity: The module is capable of stable operation in non-condensing environments with relative humidity ranging from 5% to 95%. This means that in humid coastal factories or industrial environments with frequent changes in humidity, the module will not cause electrical short circuits or other failures due to humidity problems, ensuring the reliability of network communications.

Mechanical Specifications
Dimensions: Modules may be designed in a compact form factor to fit into a variety of industrial switches. For example, a common Hirschmann module size may be around 100mm long, 70mm wide and 25mm high, which is able to fit into most standard switch slots and achieve efficient deployment in limited switch space to meet the space utilisation needs of industrial users.
Weight: The estimated weight is around 150 grams, which is not only easy for installers to install and operate, but also easier to maintain in the later stage, and at the same time, it will not bring too much weight pressure to the switch, which ensures the overall stability of the equipment.

Technical Features
Industrial-grade reliability design: Hirschmann has been committed to the development and production of industrial network equipment, the module inherited its industrial-grade reliability gene. In the hardware design, high-quality electronic components are selected and undergo a strict screening and testing process to ensure stable operation in harsh environments. For example, its circuit boards may adopt special protective coatings to enhance dust, moisture and corrosion resistance, and can work stably for a long time even in dusty mining environments or high salt fog environments by the sea.

Flexible network topology support: the module may support a variety of network topologies, in addition to the common star topology, but also adapt to the ring topology. Taking ring topology as an example, when using Hirschmann’s unique HIPER-Ring (Super Redundant Ring) technology, it is able to form a 100Mbps/1000Mbps fast self-healing ring network. In the ring network, if a link failure occurs, the ring network can automatically resume normal operation within 500 milliseconds, to ensure the continuity of network communication, which is crucial for industrial automation production lines that require high real-time network performance.

Advanced network management function: It may support serial port network management, WEB-based network management, SNMP V1/V2/V3 and other network management methods. Through these management methods, network administrators can easily configure and monitor the modules. For example, with the WEB-based network management interface, administrators can intuitively adjust parameters such as port speed, VLAN settings, port mirroring, etc. Using the SNMP protocol, they can remotely monitor the module’s operation status, discover and solve potential problems in a timely manner, and improve network management efficiency.

Scenarios
Industrial automation production line: In automotive manufacturing, electronic equipment manufacturing and other industrial automation production lines, a large number of sensors, controllers, actuators and other devices are required for real-time data interaction and cooperative work. With its high-speed and stable communication capability, industrial-grade reliability and support for multiple network protocols, the Ethernet module can ensure the accuracy and timeliness of data transmission between various devices in the production line, and safeguard the efficient and stable operation of the production line. For example, in the automotive assembly line, the sensor real-time collection of data from each assembly link is rapidly transmitted to the controller through the module, and the controller makes decisions based on the data and gives commands to the actuator through the module to achieve accurate assembly.

Intelligent factory park network: For the intelligent factory park, it covers multiple functional areas such as office area, production area, storage area, etc., and the equipment in different areas need to be interconnected. The module’s multiple port types (RJ45 port for short-distance connection to office equipment and local industrial equipment; optical fibre port for long-distance connection to network equipment between different buildings) and support for complex network topologies can meet the needs of the intelligent factory park network construction and achieve seamless coverage and efficient communication throughout the park network.

Monitoring network in the field of transport: In ports, airports and other transport places, a large number of transport equipment and monitoring equipment need to be networked and monitored. The module’s wide-temperature operating characteristics, anti-jamming capability and redundant design enable it to operate stably in the complex electromagnetic environment and temperature change environment in the transport sector, guaranteeing reliable communication of the monitoring network and providing support for the safe and efficient operation of transport. For example, in the container loading and unloading monitoring system of the port, the module ensures that the video data collected by the camera can be stably transmitted to the monitoring centre, which facilitates the staff to grasp the loading and unloading operation in real time.

1. Electrical specifications
   Power input: It is possible to adapt to common industrial supply voltages such as 24V DC (direct current). This voltage specification is widely used in industrial environments and ensures compatibility with the existing power supply system in most factories, making it easy for equipment to be connected. For example, in the networking of a factory automation line, modules can be powered directly from an existing 24V DC supply without the need for additional complex power conversion equipment. Its power input range may be between 20.4V DC and 28.8V DC to adapt to a certain degree of voltage fluctuation, to ensure that the module can still work normally when there is voltage instability in the industrial power supply environment.
   Power Consumption: Considering the Ethernet communication function and port configuration, the estimated power consumption is around 10W. Taking the 8-port module as an example, the power consumption of each port under normal operation is about 1W, plus the power consumption required by the internal circuitry of the module for arithmetic, data processing and other functions, the overall power consumption is at this level. This level of power consumption ensures that the module operates efficiently without imposing an excessive burden on the power supply system, striking a balance between industrial energy saving and stable equipment operation.
2. Port specifications
   RJ45 port: If the module includes an RJ45 port, the physical interface complies with the IEEE 802.3 standard. The transmission rate of the port is 10/100 Mbps adaptive, which automatically detects the rate of the connected device and adapts it. In short-distance data transmission scenarios, such as intra-office network connections, the RJ45 port can easily and quickly connect devices to the network. The transmission distance of the port can theoretically reach up to 100 metres when using Cat5e and higher specification cables, which can meet the length requirements of general indoor network cabling.
   Fibre optic port (if available): If equipped with a fibre optic port, such as an SFP port, the supported fibre types may include multi-mode fibre and single-mode fibre. Multimode fibre is suitable for short-distance high-speed data transmission, which is more commonly used in the network connection inside the building, and the transmission distance can reach about 300 meters when using OM3 multimode fibre, which can meet the demand for short-distance high-speed connection between different buildings in the general campus network. Single-mode optical fibre is suitable for long-distance transmission, which is useful for connecting remote industrial sites or cross-city network connection, and the transmission distance can be up to tens of kilometres, for example, the network connection between different plants of large industrial groups.
3. Network specifications
   Protocol support: It must support IEEE 802.3 Ethernet protocol, which is the basic standard for Ethernet communication, ensuring that the module can communicate with all kinds of devices complying with this standard. Meanwhile, it may support VLAN (Virtual Local Area Network) protocol, such as IEEE 802.1Q, which is convenient for users to logically segment the network and improve network security and management efficiency. In large enterprise networks, VLANs can be used to delineate different departments of the network for data isolation and traffic control. In addition, it may support Spanning Tree Protocol (STP, IEEE 802.1D), which is used to prevent loops in the network, safeguard the stability of the network topology, and avoid problems such as broadcast storms in complex network structures.
   MAC Address: Each port has a unique 48-bit MAC address, which is used to identify the device in the network and ensure that data is transmitted to the destination port accurately and correctly.The uniqueness of the MAC address is assigned by the IEEE, and is like an ID card for the device, unique worldwide, ensuring the accuracy and traceability of network communications.
4. Environmental specifications
   Operating Temperature: Industrial grade temperature adaptability, with a possible operating temperature range of – 40°C to + 70°C. This temperature range allows the module to operate in harsh industrial environments, whether in cold northern outdoor industrial facilities or hot southern factory floors. For example, in a cold storage environment, the module can operate stably at low temperatures to ensure normal communication in a cold chain logistics monitoring network, and in a hot steel smelting plant, it can also withstand high temperatures to maintain network connectivity.
   Storage Temperature: The storage temperature range may be wider, from – 45°C to + 85°C. Even during the storage period when the equipment is not put into use, the module can maintain its performance in the face of extreme temperatures to ensure that it operates correctly when it is put into use.
   Relative humidity: Capable of operating in non-condensing environments from 5% to 95% relative humidity. This means that in humid coastal factories or industrial environments where humidity varies greatly, the module will not cause electrical short circuits or other failures due to humidity problems, ensuring the reliability of network communications.
5. Mechanical Specifications
   Size: The module’s external dimensions may be designed to be more compact to facilitate installation in various types of industrial switches. For example, a common Hirschmann module measures about 100mm in length, 70mm in width, and 25mm in height, which fits into most standard switch slots for efficient deployment in limited switch space.
   Weight: Estimated weight is around 150g, which is light enough for easy installation and maintenance without putting too much weight on the switch, ensuring the overall stability of the device.

Ethernet Connectivity and Port Configuration
Communication speed: The module is most likely designed to support Fast Ethernet communication. Given that its model number is similar to other Hirschmann media modules, it may be able to operate at 10/100Mbps, which is a common speed range for Fast Ethernet devices. This makes it suitable for application scenarios that require fast data transfer, such as in industrial control systems where real-time monitoring and control of production processes is critical. For example, in a manufacturing plant, sensors and actuators can communicate at high speeds with a central control unit through the module to ensure the smooth running of the production line.

These ports may be a combination of different types. For example, some ports may be copper-based RJ45 ports, which are cost-effective and widely used for short-distance connections within a facility. They are convenient for connecting local computers, printers, or small industrial equipment close to a network switch. Other ports may be fibre-optic interfaces, such as small pluggable (SFP) ports, multimode SC ports, or single-mode SC ports. Fibre-optic ports are suitable for long-distance transmission, high-bandwidth applications, and environments where electrical interference is an issue. In large industrial complexes with multiple buildings, fibre optic connections via this module can be used to connect different parts of the network, providing reliable and high-speed data transmission over long distances without the risk of interference from electrical equipment.

Compatibility
Switch compatibility: The module is likely to be compatible with Hirschmann’s range of Industrial Ethernet switches, especially the Greyhound series of switches, such as the Greyhound 1020/1030 switch. The modular design of Hirschmann switches makes it easy to add media modules like GMM20 – MMMMMMMMSZ9HHS999.9.99. This compatibility ensures seamless integration into existing or new network infrastructures. If a company already has a Hirschmann-based network and needs to add more network connections or change the type of connection (e.g. from copper to fibre optic), they simply plug the module into a compatible switch. This not only saves the cost of replacing an entire network system, but also provides the flexibility to customise the network to changing business needs.

Device compatibility: In addition to being compatible with switches, the module may be compatible to some extent with other industry-standard Ethernet devices. However, this will depend on the specific protocol support and electrical/physical interface standards implemented in the module. For example, if it follows a standard Ethernet protocol like IEEE 802.3, it should be able to communicate with a wide range of Ethernet-compatible devices, including certain types of industrial sensors, actuators, and other networked devices from various manufacturers. This interoperability is critical in complex industrial environments where devices from multiple vendors need to work together in a unified network.

Industrial Grade Reliability
Environmental Adaptability: Hirschmann is known for producing industrial-grade networking equipment, and the GMM20 – MMMMMMMMSZ9HHS999.9.99 is likely to be no exception. It may be designed to withstand harsh environmental conditions. This may include a wide operating temperature range, similar to other industrial modules that are capable of operating in the – 40°C to + 70°C temperature range. Such a wide temperature tolerance makes it suitable for a variety of application scenarios, including outdoor installations in extreme weather conditions, industrial plants with high-temperature machinery and equipment in operation, or cold storage facilities. In outdoor oil and gas fields, for example, the module can withstand temperature fluctuations throughout the day and night, ensuring that the network connection to the monitoring and control system remains stable.

Resistance to electrical interference: It may also have the ability to resist electrical interference, which is critical in industrial environments filled with large motors, power distribution systems and other electrical equipment that generate a lot of electromagnetic noise. By meeting electromagnetic compatibility (EMC) standards, the module is able to operate reliably in these noisy environments. This means that data transmission through the module is unaffected by electrical interference, ensuring accurate and stable communication between networked devices. In a plant with many large motors operating simultaneously, the GMM20 – MMMMMMMMSZ9HHS999.9.99 is able to maintain a stable network connection, preventing data loss or errors that might otherwise disrupt the production process.

Installation and Configuration
Installation Ease: As an interchangeable media module, it is designed to be easily installed into compatible switches. The installation process can be as simple as following the standard procedure of inserting the module into a switch slot. This simplicity reduces the time and effort required for network installation and expansion. For network technicians, they can quickly add the module to a switch without complex tools or extensive training, minimising downtime during network upgrades.
Configuration Options: Similar to other Hirschmann modules, the GMM20 – MMMMMMMMSZ9HHS999.9.99 may support a variety of configuration options. It may be configured through a web-based interface that provides a user-friendly graphical interface for network administrators to set parameters such as port speeds, VLAN (Virtual Local Area Network) assignments, and security settings.

For example, VLANs may be used to segment the network for security purposes, separating sensitive data traffic from normal network traffic. The module may also support configuration via a command line interface (CLI) to meet the needs of more experienced users who prefer a text-based approach for precise control over settings. In addition, it may be compatible with the Simple Network Management Protocol (SNMP), allowing remote monitoring and management of the module’s status and performance. This is particularly useful in large-scale network deployments where centralised management of multiple network devices is required.

1. Ethernet connectivity
   This module is most likely designed to facilitate Ethernet communications. Modules in this family typically support Fast Ethernet or Gigabit Ethernet speeds. For example, some of the modules in question can operate at 10/100/1000 Mbps, enabling high-speed data transfer between network devices. Such speed ranges make them suitable for a variety of industrial and enterprise applications where fast data exchange is critical, such as factory automation systems, data centres or large office networks.
   It may have multiple Ethernet ports. Other GMM – series modules have different port configurations, such as 8-port or 16-port setups. These ports may be a mix of copper (RJ45) and fibre optic (e.g. small pluggable SFP, multimode SC or single mode SC) interfaces. Copper ports are cost-effective for short-distance connections within a building or small area, while fibre optic ports are ideal for long-distance, high-bandwidth and interference-free transmission.
2. Compatibility
   Compatible with industrial Ethernet switches such as Hirschmann’s Greyhound 1020/1030 series. Compatibility with these switches ensures seamless integration into existing or new network infrastructures. The modular design of these switches allows for easy expansion by adding media modules such as GMM20 – MMMMMMEV9HHS9XX, enabling users to customise their network setup to their specific requirements. For example, if an existing network needs to add more fibre optic connections for a new remote sensor network, the module can be added to a suitable Hirschmann switch.
   The module also offers a degree of compatibility with other industry-standard Ethernet devices, depending on the specific protocols and electrical/physical interface standards supported by the module.
3. Industrial Grade Reliability
   Hirschmann is known for manufacturing industrial-grade networking equipment, and the GMM20 – MMMMMMEV9HHS9XX is no exception. It is designed to withstand harsh environmental conditions. This may include a wide operating temperature range, similar to other industrial modules that can operate in temperatures ranging from – 40°C to + 70°C. The GMM20 – MMMMEV9HHS9XX is designed to withstand harsh environmental conditions. This makes it suitable for use in outdoor applications, industrial plants at extreme temperatures or in areas with poor climate control.
   It can also provide protection against electrical interference, for example by complying with electromagnetic compatibility (EMC) standards. This ensures that the module operates reliably in electrically noisy environments, for example in plants with large motors, distribution systems or other electrical equipment.
4. Management and configuration
   The modules can support basic network management functions. Some similar Hirschmann modules can be configured through a web-based interface, command line interface (CLI), or Simple Network Management Protocol (SNMP). This allows network administrators to set parameters such as port speeds, VLAN (virtual LAN) assignments, and security settings. For example, VLANs can be used to segment the network for security or traffic management purposes, and the ability to configure these parameters on the module adds flexibility to the overall network design.
   The modules also support features such as link aggregation, which allows multiple physical ports to be grouped together to provide higher bandwidth and redundancy. This is useful in applications that require high availability and increased throughput, such as server-to-switch connections in data centres.
5. General safety provisions
   This equipment is powered on and in operation. Improper use may result in personal injury or property damage. Proper transport, compliant storage, installation, and careful operation and maintenance are prerequisites for safe and trouble-free operation of the equipment.
   Read this document, safety tips and warnings before connecting any cables.
   Use only undamaged parts.
   Repair parts are not included with the device. In case of malfunction or damage, disconnect the power supply and send the device to Hirschmann for inspection.

Intended use
The product is to be used only for the applications described in the Hirschmann product information and in this manual.
Use this product only within the limits specified in the technical data. See ‘Technical Data’ on page 57.
Connect this product only to components that meet the requirements of the respective application.

Installation position requirements
When installing, please observe the regulations of the country in which the equipment is to be operated.
When the ambient temperature is below -10°C, wiring suitable for the lowest temperature must be used.
For equipment models with supply voltage N (110VDC): See ‘Equipment Names and Product Codes’ on page 21. This equipment must be installed only in an operating mechanism with restricted access and accessible only to maintenance personnel. Install the device correctly to avoid mechanical shocks from the power supply area.
Hint: Risk of torsion, contact problems and gradual breakage if stress relief is not sufficient.
Reduce the effects of mechanical stress on cable and wire connection points.
Strain relief devices should be designed to prevent any mechanical damage to cables, wires or conductors from external influences or their own weight.
To prevent damage to the device connections, plug-in connectors and cables, observe the correct installation instructions in DIN VDE 0100 520:2013 – 06, sections 522.6, 522.7 and 522.13.

Enclosure
The housing may only be opened by specialists authorised by the manufacturer.
Never insert sharp objects (narrow screwdrivers, wires or similar) into the interior of the device or into the wire connection terminals. Do not touch the connection terminals.
Mount the device vertically with the antenna facing upwards.
When the ambient temperature is > + 60°C: The surface of the device chassis may be very hot. Do not touch the device during operation.

Personnel qualification requirements
Only qualified personnel should be assigned to operate the equipment. Qualified personnel should have the following characteristics:
Qualified personnel have received appropriate training. Training and practical knowledge and experience constitute personnel qualifications. This is a prerequisite for the connection, earthing and labelling of circuits, equipment or systems in accordance with current technical safety standards.
The competent person is aware of the hazards of the work.
The competent person knows the appropriate measures to deal with these hazards in order to reduce the risk to himself and others.
The competent person receives regular refresher training.
National and international safety regulations
Note whether the electrical installation complies with local or national safety regulations.
Grounding
Ground the unit through the earth wire connector on the unit itself.
Ground the unit before connecting other cables.
Disconnect all cables from ground at the end. The entire shield of the connected shielded twisted pair cable is electrically connected to the grounding wire connector on the metal housing.
Prerequisites for connecting wires
Before each connection of wires, make sure that the stated prerequisites are fulfilled.

Installation
The unit is shipped from the factory in a standby condition. To avoid contamination of the exposed contacts when the components are set aside and not installed, store all components of the system together in a dry, clean workplace. The device complies with the IP65/67 protection class only if
All connected connectors and cables are IP65/67 rated.
All unused connections and ports are sealed with the appropriate protective screws.
The protection screws supplied as accessories are IP65/67 rated.

Connecting the data cable
Follow the general recommendations below for wiring data cables in high interference environments:
Choose the shortest possible data cable.
Use fibre-optic cables for data transmission between buildings.
When wiring with copper cables, make sure that there is enough space between the power and data cables. It is best to install the cables in separate cable trenches.
Please note that power and data cables should not run in parallel over long distances. To minimise inductive coupling, ensure that the power and data cables are crossed at an angle of 90°.
For Gigabit transmission, use shielded data cables with more than copper wires, e.g. SF/UTP cables according to ISO/IEC 11801. For all transmission rates, use shielded data cables according to EN50121 – 4 and the requirements for marine applications.

Hirschmann Brand Advantages
Hirschmann has a longstanding reputation in the field of industrial networks, with a deep history and excellent technical strength. Since its establishment in 1924, Hirschmann has been making breakthroughs in technological innovations, from the early innovation of broadcasting and television transmission technology to the later pioneering of enterprise and industrial network solutions. 1984, Hirschmann successfully constructed the world’s first fibre-optic Ethernet, and in 1990, it launched the HIPER – Ring technology, which has continued to set the trend for the development of the industry. With nearly 100 years of experience, Hirschmann products occupy an important position in the global industrial market with their unrivalled reliability and high performance, and the MM20 – s 2s 2m 2 sahh managed Ethernet switch is a strong testimony to the brand’s strength.

Port Setting and Connection Characteristics
Ethernet ports: The switch is most likely to be equipped with multiple Ethernet ports and supports 10/100/1000Base-T adaptive rate function with standard RJ-45 interface. In practical application scenarios, when using standard Ethernet cables such as Cat5e, Cat6, etc., the transmission distance can reach 100 metres stably. This makes it easy to connect industrial controllers, smart sensors, computers and other Ethernet devices in industrial automation production lines, ensuring efficient and stable data transmission over short distances within the factory floor.

Fibre optic port: In view of the urgent need for long-distance, high-bandwidth data transmission in industrial environments, the MM20-s 2s 2m 2 sahh switch is most likely to be equipped with a fibre optic port. If it is a multi-mode optical fibre port, the transmission distance can reach up to 550m when 50/125μm optical fibre is used and the transmission rate is set to 1000Mbps, which is suitable for scenarios where different workshops and floors within a factory are in relatively close proximity to each other, but the data transmission rate is demanding, such as the data interaction between equipment in different production areas of an electronics manufacturing factory.

In the case of single-mode fibre ports, when 1310nm single-mode fibre is used, the transmission distance can be greatly extended to several kilometres, which is of great significance for long-distance application scenarios such as cross-factory data communication in large-scale industrial parks, or data transmission between the headquarters of a petrochemical company and a remote production base. The fibre optic port type is either SC or LC, which is easy to plug and unplug and has strong connection characteristics, fully meeting the requirements of industrial environments for both reliability and convenience of equipment connection.

Data processing and transmission performance
Fast data forwarding mechanism: The switch is equipped with a high-performance switching chip and adopts optimised forwarding algorithms to achieve extremely fast data forwarding operations. In the complex industrial automation production process, a large number of sensors generate data that need to be transmitted to the control system in real time and accurately, MM20 – s 2s 2m 2 sahh switch can forward these data to the target device in a very short time accurately and without error, which strongly guarantees the timeliness of the production data and ensures that the production line can run efficiently and stably.

VLAN Function Support: Supports Virtual Local Area Network (VLAN) technology, which can logically divide a physical network into multiple independent virtual networks. In a large enterprise network, data from different departments or business areas can be effectively segregated and managed with the help of VLAN technology. For example, dividing the production equipment network and office network into different VLANs can significantly improve network security and network management efficiency, while also effectively avoiding the negative impact of broadcast storms on network performance.

QoS Quality of Service Assurance System: It is equipped with perfect QoS (Quality of Service) function, which can differentiate data according to its type and priority. In the field of industrial automation, for control data with extremely high real-time requirements, a higher priority can be set to ensure that such data can still be transmitted with priority when the network is congested, thus avoiding production accidents caused by network delays. For non-critical monitoring data, a lower priority can be set to achieve a reasonable allocation of network bandwidth resources.

Network Management Function Module
Diversified Management Modes: As a managed Ethernet switch, MM20-s 2s 2m 2 sahh supports rich and diversified management modes. Professional network engineers can perform fine configuration through the command line interface (CLI) to meet the needs of complex network settings; Telnet can also be used for remote management, which is convenient for configuring and monitoring the switch in remote environments. In addition, it also provides Web-based management, which enables even non-professionals to easily perform basic configuration operations, such as setting port parameters and viewing real-time network status, through an intuitive graphical interface.

Port Monitoring and Statistical Analysis: Each port can be monitored in real time, including the connection status of the port, data traffic, the number of error frames and other key information. With the help of these real-time monitoring data, network administrators can detect network failures or abnormal traffic conditions, such as sudden interruption of port connection, abnormal increase of data traffic, etc., and quickly take corresponding measures. In addition, the switch can also perform comprehensive statistical analysis of port data, such as the average traffic volume and peak traffic volume over a period of time, providing valuable data for network optimisation and expansion.

Security Management Mechanism: Supporting Access Control Lists (ACLs), the switch can strictly restrict network access based on various conditions such as source IP address, destination IP address, port number, and so on. For example, in an industrial network, only devices with specific IP address segments are allowed to access the production network, effectively preventing unauthorised devices from accessing the network and effectively safeguarding the security of the industrial network. At the same time, 802.1X authentication may be supported to ensure that the identity of devices accessing the network is legal and compliant through a rigorous authentication mechanism, further enhancing the overall security of the network.

Reliability and Environmental Adaptability
Redundant design guarantee: Some models may adopt redundant power supply design, equipped with two or more power input interfaces. When one of the power supply fails, the other power supply can quickly and automatically take over the work to ensure the continuous and stable operation of the switch, effectively avoiding network interruptions caused by power failure. In terms of network connection, it supports link redundancy function, which transmits data through multiple network links. Once a link fails, the data can be automatically switched to other normal links in a very short time to ensure the continuity and stability of network communication. This feature is especially suitable for industrial application scenarios that require high network reliability, such as electric power system monitoring network and medical equipment remote control network.

Industrial-grade standard: Strictly following the industrial-grade standard for design and manufacturing, it can adapt to all kinds of harsh industrial environments. The internal electronic components have been carefully screened, with excellent resistance to high and low temperatures, humidity, dust and other characteristics, the shell design can be effectively dustproof, waterproof, the internal structure can withstand a certain degree of vibration and shock. Whether in the hot smelting workshop of a steel factory, the dusty and humid working environment of a coal mine, or the complex and changeable climatic conditions of an outdoor power substation, the MM20 – s 2s 2m 2 sahh switches can operate stably and reliably, ensuring that the industrial network is always unimpeded.

Brand strength endorsement
Hirschmann, as a leading brand in the field of industrial networks, has been established since 1924, after nearly a hundred years of technical precipitation and market cultivation. Hirschmann has achieved outstanding results in the fields of broadcasting and television transmission technology, enterprise and industrial network solutions. In 1984, Hirschmann built the world’s first fibre-optic Ethernet, and in 1990, it launched HIPER – Ring, which has established its position at the forefront of industrial network technology.

With deep technical accumulation and rich experience, its products are known for high reliability and excellent performance, which can operate stably in extreme industrial environments such as high temperature, high pressure and strong electromagnetic interference, and its business covers the whole world, which provides a solid brand guarantee for MM20 – m2 m2 t1 sahh managed Ethernet switch.

Port Configuration and Connectivity
Ethernet Ports: The switch will most likely be equipped with Ethernet ports that support 10/100/1000Base-T adaptive rates, using standard RJ-45 interfaces. This design enables a transmission distance of up to 100 metres when using standard Cat5e, Cat6 or higher Ethernet cables, which can easily and seamlessly connect with industrial controllers, smart sensors, computers and other types of Ethernet devices, ensuring stable and reliable short-distance data transmission in the industrial field to meet the needs of data interaction between devices on the factory floor.

Optical Fibre Port: Considering the demand for long distance and high bandwidth transmission in industrial scenarios, it is likely to be equipped with an optical fibre port. If it is a multi-mode optical fibre port, the transmission distance is estimated to be up to 550m when 50/125μm optical fibre is used and the transmission rate is 1000Mbps, which is suitable for scenarios where different workshops and floors within the factory are in relatively close proximity to each other, but have higher requirements for the data transmission rate, such as the data communication between the equipment of the stamping workshop and the welding workshop of the automobile manufacturing factory.

When equipped with single-mode fibre ports, the transmission distance can be greatly extended to several kilometres when using single-mode fibre at 1310nm wavelength, which is significant for data communication across plants in large industrial parks, or for long-distance data transmission between substations and remote monitoring centres in smart grids. Fibre optic ports may be of the common SC, LC type, with easy plugging and unplugging, solid connection characteristics, in line with the requirements of industrial environments on the stability and convenience of equipment connection.

Data processing and transmission performance
High-performance data forwarding: High-performance switching chips and optimised forwarding algorithms are used internally to achieve fast data forwarding. In industrial automation production lines, a large amount of sensor data needs to be transmitted to the control system in real time, MM20 – m2 m2 t1 sahh can accurately forward the data to the target device in a very short time, to ensure the timeliness of the production data, to ensure the efficient operation of the production line.

VLAN Support: Supports Virtual Local Area Network (VLAN) technology, which can divide a physical network into multiple logically independent virtual networks. In the enterprise network, the data of different departments or business areas can be isolated and managed through VLANs, for example, dividing the production equipment network and office network into different VLANs, which improves network security and management efficiency while avoiding the impact of broadcast storms on network performance.

QoS (Quality of Service): With QoS (Quality of Service) function, it can differentiate the processing according to the type and priority of data. For control data in industrial automation with high real-time requirements, a higher priority can be set to ensure that it is transmitted first when the network is congested, so as to avoid production accidents caused by network delays, while for non-critical monitoring data and so on, a lower priority can be set to reasonably allocate network bandwidth resources.

Network Management Functions
Multiple management methods: As a managed Ethernet switch, it supports rich management methods. It can be configured via command line interface (CLI), which is suitable for professional network engineers to set complex parameters; it also supports Telnet remote management, which is convenient to configure and monitor the switch remotely. At the same time, it provides web interface management, with intuitive graphical interface, allowing non-professionals to easily perform basic configuration operations, such as setting port parameters, checking network status, and so on.

Port monitoring and statistics: It can monitor the status of each port in real time, including the connection status of the port, data traffic, number of error frames and other information. Through these real-time monitoring data, network administrators can timely detect network failures or abnormal traffic, such as port connection interruption, data traffic abnormally increased, etc., and handle the situation accordingly. In addition, the port data can be statistically analysed, such as the average flow rate and peak flow rate over a period of time, providing data basis for network optimization and expansion.

Security Management: Support Access Control List (ACL), which can restrict network access according to source IP address, destination IP address, port number and other conditions. For example, only devices with specific IP address segments are allowed to access the production network, preventing unauthorised devices from accessing and safeguarding the security of the industrial network. At the same time, it may support 802.1X authentication to ensure that the identity of devices accessing the network is legitimate through the authentication mechanism, further enhancing network security.
V. Reliability and Environmental Adaptability

Redundant design: Some models may adopt redundant power supply design, equipped with two or more power input interfaces, so that when one power supply fails, the other power supply can automatically take over the work to ensure the continuous operation of the switch and avoid network interruption due to power failure. In terms of network connection, it supports link redundancy function, which transmits data through multiple network links, and when one link fails, the data can be automatically and quickly switched to other normal links to ensure uninterrupted network communication, which is suitable for industrial application scenarios that require high network reliability, such as electric power system monitoring network, chemical production control system, and so on.

Industrial-grade design: Strictly designed and manufactured in accordance with industrial-grade standards, it can adapt to harsh industrial environments. The internal electronic components have been strictly screened and have the characteristics of high temperature resistance, low temperature resistance, humidity resistance, dust resistance, etc. The shell design can effectively prevent dust and water, and the internal structure can resist a certain degree of vibration and impact. For example, it can operate stably in the high temperature smelting workshop of steel factory, dusty and humid environment of coal mine, outdoor power substation and other harsh places to ensure the reliable connection of industrial network.

Product Overview: MICE MS20/MS30 series switches are modular industrial Ethernet switches designed for industrial automation, meeting relevant industry standards with high reliability and flexibility. They can be customised according to the number of ports, transmission speed, temperature range and other criteria, and support a variety of installation and management methods to build IEEE 802.3-compliant switched industrial Ethernet networks.

Product Details
Models and Codes: Product codes contain information about device characteristics, such as MS20 for modular switches without Gigabit ports and MS30 for modular switches with Gigabit ports, which can be used to identify specific device attributes.
Device variants: The MS20 series has 8, 16, and 24 10/100 Mbit/s Ethernet ports; the MS30 series has 2 Gigabit ports in addition to the 10/100 Mbit/s Ethernet ports. The port media type can be selected via a media module.

Media Modules: Various types of media modules provide different interfaces and functions, such as the MM2 and MM3 series modules, as well as the MM22 – T1T1T1T1 module with PoE support and the MB20 module for extended functions.
Port functions: Ethernet ports include 10/100/1000 Mbit/s twisted pair ports, 10/100 Mbit/s twisted pair ports, 10/100 Mbit/s PoE ports, 1000 Mbit/s F/O ports, and 100 Mbit/s F/O ports, which support different standards and functions; AUI ports can be connected to specific devices with their corresponding functions and default settings. The AUI ports can be connected to specific devices with their corresponding functions and default settings.

Display Components: Device status, display status, and port status are indicated by different LEDs, reflecting various information such as device operation, port connection, and so on.
Installation Guide: The installation process covers checking the package, installing the media module, setting the DIP switches, connecting the power and signal contacts, mounting the device to the DIN rail and grounding it, and connecting the data cables, with detailed instructions and precautions for each step.

Basic Settings: The first installation requires IP parameters to be set, which can be configured through the V.24 interface, BOOTP, DHCP, etc. The default settings include the IP address acquisition method. The default settings include IP address acquisition method, management password, etc. It is recommended to change the default password when logging in for the first time to enhance security.

Working Principle
Signal Conversion Principle: This media converter can convert different types of network signals to achieve interconnection between devices. In industrial environments, the conversion of common Ethernet signals and optical fibre signals is an important function. In a factory automation line, for example, where the sensor devices at the front end may transmit data via optical fibre and the control system at the back end uses Ethernet for data processing, the MM20 – M2M2M2TAHH media converter precisely converts optical signals transmitted via optical fibre into electrical signals over Ethernet and vice versa, guaranteeing smooth data transmission between the different media.

The signal conversion process is based on a specific chip and circuit design. The internal converter chip is able to analyse and process the incoming signals and convert them to the target signal format according to the appropriate protocols and standards, ensuring accuracy and stability during the conversion process.

Port Interaction Principle: There are various types of ports, and different ports have their own functions and collaborate with each other to achieve data transmission. The Ethernet port supports 10/100/1000Base-T adaptive rate, which can automatically recognise the Ethernet transmission rate of the device connected to it and adapt to it. When connecting devices with different rates, such as 100Mbps old devices and 1000Mbps new devices, the port can automatically adjust the rate to ensure the compatibility of data transmission. Fibre optic ports enable long distance, high speed data transmission depending on the type of fibre (multimode or singlemode) and wavelength.

Multimode fibre ports can transmit up to 550m at 1000Mbps under 50/125μm specification, which is suitable for data interaction between equipment in different workshops within a factory; single-mode fibre ports can extend the transmission distance to several kilometres at 1310nm wavelength, which meets the needs of cross-factory data communication in large-scale industrial parks. Data interaction between ports follows the relevant Ethernet protocols and fibre optic transmission standards, ensuring accurate and fast data transmission between ports.

Network Adaptation Principle: In complex industrial network environments, the MM20 – M2M2M2TAHH media converter is equipped with powerful network adaptation capabilities. It supports a wide range of industrial Ethernet protocols, such as Modbus TCP, PROFINET, EtherNet/IP, and so on.

This allows different brands and types of industrial automation equipment to communicate and interact with each other via the media converter, even if they use different protocols. In an industrial automation production line containing multiple brands of controllers and sensors, the media converter can convert and transmit the data of devices using Modbus TCP protocol to achieve interoperability and co-operation of the entire production line. In addition, it can adapt to different network topologies, whether it is a bus, star or ring network, can work stably, to ensure the reliability and stability of industrial networks.

Brand foundation: Hirschmann’s deep heritage
Since its foundation in 1924, Hirschmann has gradually transformed itself from a one-man company into a global leader in the field of communications. In the field of broadcasting and television transmission technology, its mobile transmitter and receiver systems support the stable propagation of signals; in enterprise and industrial network solutions and fieldbus systems, Hirschmann’s pioneering achievements include the world’s first fibre-optic Ethernet in 1984 and the introduction of HIPER-Ring (redundant ring) Ethernet in 1990. These pioneering achievements underline Hirschmann’s deep technical know-how and excellent market reputation in industrial networks and related fields.

With rich experience and expertise, Hussmann’s products are able to maintain high transmission speed and reliability in harsh industrial environments such as high temperature, high pressure, and strong electromagnetic interference. Hussmann has a global presence, with production plants in Germany and Hungary, and branches in Europe, the United States, and Asia, ready to respond to the needs of customers around the world.

Port and Connection Characteristics
Ethernet Port: Based on similar Hussmann products, the MM20 – m2 m2 m2 eahh media converter is likely to be equipped with an Ethernet port that supports 10/100/1000Base-T adaptive rates, using an RJ-45 interface. This design facilitates connection using standard Cat5e, Cat6 or higher Ethernet cables, and ideally, the Ethernet port can effectively transmit data over distances of up to 100 metres using standard-compliant cables. This makes it easy to seamlessly connect with industrial controllers, smart sensors, computers and other Ethernet devices, ensuring the stability and reliability of short-distance data transmission in industrial sites.

Fibre optic port: Considering the demand for long distance and high bandwidth transmission in industrial scenarios, the media converter is likely to be equipped with a fibre optic port. If the media converter is equipped with a multi-mode optical fibre port, the transmission distance is estimated to be up to 550m when using 50/125μm optical fibre with a transmission rate of 1000Mbps, which is suitable for scenarios such as different workshops and floors within a factory that are relatively close to each other but with higher requirements on data transmission rate, for example, data interactions between equipments in different production areas of an automobile manufacturing factory.

When equipped with single-mode fibre ports, the transmission distance can be significantly extended to several kilometres when using single-mode fibre at 1310nm wavelength, which is important for cross-factory data communication in large industrial parks or long-distance data transmission scenarios such as transformer substations and remote monitoring centres in smart grids. Fiber optic port types may be common SC, LC type, with easy plugging and unplugging, solid connection characteristics, to meet the requirements of industrial environments on the stability and convenience of equipment connection.

Data conversion performance
Accurate signal conversion: In industrial automation production lines, front-end sensors often use optical fibre to build high-speed data acquisition networks, while back-end control systems are often based on Ethernet architecture. one of the core functions of the MM20 – m2 m2 m2 m2 eahh media converter is to accurately convert optical signals transmitted by optical fibre into electrical signals that can be recognised by Ethernet, and vice versa.

In an electronics manufacturing plant, for example, high-precision sensors on the production line used to check the quality of the product transmit the test data over the optical fibre to the media converter, which quickly converts it into Ethernet signals and transmits them to the production management system at the back end, providing timely and accurate data for production decision-making, and guaranteeing efficient and stable operation of the production line.

Intelligent Rate Adaptation: In a complex industrial network environment, the data transmission rate of different devices varies greatly. New devices may have a transmission rate of 1000Mbps or even higher, while some old devices still maintain a rate of 100Mbps. MM20 – m2 m2 m2 m2 eahh is equipped with a rate adaptation function, which can automatically sense the transmission rate of the devices connected to it and carry out intelligent matching and coordination.

In the enterprise network upgrading and transformation, through the media converter, these devices with different rates can work together in the same network, avoiding data transmission delays, packet loss or even interruptions due to rate mismatch, which greatly improves the stability and compatibility of network data transmission and ensures that all kinds of data can be transmitted smoothly in the process of industrial production.

Network Expansion and Security
Breakthrough transmission distance limitation: traditional Ethernet twisted pair transmission distance is limited, it is difficult to meet the demand for long-distance data transmission in large-scale industrial facilities with widely distributed equipment. mm20 – m2 m2 m2 m2 eahh media converter effectively solves this problem with the advantages of fibre optic transmission in terms of distance and anti-interference. In large industrial plants such as steel and cement factories, the plant area is vast and the equipment is extremely dispersed.

By using the media converter with optical fibre, data can be transmitted up to several kilometres away, significantly extending the network coverage. For example, in a steel plant, between the equipment located in the high-temperature smelting area and the central monitoring room located at the far end of the plant, through the media converter and optical fibre, it is possible to stably transmit the data on the operating status of the equipment, process parameters and other data to the monitoring room, so as to facilitate the operators to grasp the production situation in real time, to make decisions in a timely manner, and to safeguard the safety and stability of the production process.

Strengthen network security protection: In the signal conversion at the same time, MM20 – m2 m2 m2 m2 eahh also has a network isolation function, which is of great significance to improve the security of industrial networks. It can effectively block the flow of unnecessary network traffic between different network areas, reducing the scope of potential network attacks on the entire network system threat. In substations in the power industry, networks in different functional areas, such as the primary equipment monitoring network and the secondary equipment protection network, are segregated by this media converter.

Even if the network in a certain region suffers from malicious attacks, the attack can be prevented from spreading to other regions to the maximum extent possible, safeguarding the stable operation of the power system network and ensuring the reliability of power supply. In addition, some of the media converters may also have a simple protocol conversion function, so that the use of different communication protocols network equipment can achieve interoperability, further enhancing the overall security and adaptability of the network.

Brand foundation: Hirschmann’s deep roots
Since its foundation in 1924, Hirschmann has evolved from a one-man company into a global leader in the field of communications over the course of nearly a century. In the field of broadcasting and television transmission technology, its mobile transmission and reception systems support the stable propagation of signals; in enterprise and industrial network solutions and fieldbus systems, Hirschmann’s pioneering achievements include the world’s first fibre-optic Ethernet in 1984 and the introduction of HIPER-Ring (redundant ring) Ethernet in 1990.

These pioneering achievements underline Hirschmann’s deep technical know-how and excellent market reputation in industrial networks and related fields. With rich experience and expertise, Hussmann’s products are able to maintain high transmission speed and reliability in harsh industrial environments such as high temperature, high pressure, and strong electromagnetic interference, etc. Hussmann’s business is spread all over the world, with production plants in Germany and Hungary, and branches in Europe, the United States, and Asia, responding to the needs of customers around the world at any time.

Port and Connection Characteristics
Ethernet Port: Based on similar Hussmann products, the MM20 – t1 t1 t1 eahh media converter is likely to be equipped with an Ethernet port that supports 10/100/1000Base-T adaptive rates, using an RJ-45 interface. This design facilitates connection using standard Cat5e, Cat6 or higher Ethernet cables, and ideally, the Ethernet port can effectively transmit data up to 100 metres using standard-compliant cables. This makes it easy to work seamlessly with industrial controllers, smart sensors, computers and other Ethernet devices, ensuring the stability and reliability of short-range data transmission in the industrial field.

Fibre optic port: Considering the demand for long distance and high bandwidth transmission in industrial scenarios, the media converter is likely to be equipped with a fibre optic port. If the media converter is equipped with a multi-mode optical fibre port, the transmission distance is estimated to be up to 550m when using 50/125μm optical fibre with a transmission rate of 1000Mbps, which is suitable for scenarios such as different workshops and floors within a factory that are relatively close to each other but with higher requirements on data transmission rate, for example, data interactions between equipments in different production areas of an automobile manufacturing factory.

When equipped with single-mode fibre ports, the transmission distance can be significantly extended to several kilometres when using single-mode fibre at 1310nm wavelength, which is important for cross-factory data communication in large industrial parks or long-distance data transmission scenarios such as transformer substations and remote monitoring centres in smart grids. Fibre optic ports may be of the common SC, LC type, with easy plugging and unplugging, solid connection characteristics, to meet the requirements of industrial environments on the stability and convenience of equipment connection.

Data conversion performance
Accurate signal conversion: In industrial automation production lines, front-end sensors often use optical fibre to build high-speed data acquisition networks, while back-end control systems often use Ethernet architecture. one of the core functions of the MM20 – t1 t1 t1 t1 eahh media converter is to accurately convert optical signals transmitted by optical fibre into electrical signals that can be recognised by Ethernet, and vice versa. In an electronics manufacturing plant, for example, high-precision sensors used in the production line to check the quality of the products are transmitted via optical fibre to the media converter, which quickly converts them into Ethernet signals and transmits them to the production management system at the back end, thus providing timely and accurate data for decision-making, and guaranteeing efficient and stable operation of the production line.

Intelligent Rate Adaptation: In a complex industrial network environment, the data transmission rate of different devices varies greatly. New devices may have a transmission rate of 1000Mbps or even higher, while some old devices still maintain a rate of 100Mbps. MM20 – t1 t1 t1 t1 eahh is equipped with a rate adaptation function, which can automatically sense the transmission rate of the devices connected to it and carry out intelligent matching and coordination.

When enterprises carry out network upgrading and transformation, the media converter enables these devices with different rates to work together in the same network, avoiding data transmission delays, packet loss or even interruption due to rate mismatch, which greatly improves the stability and compatibility of network data transmission and ensures that all kinds of data can be transmitted smoothly in the process of industrial production.

Network Expansion and Security
Breakthrough transmission distance limitation: traditional Ethernet twisted pair transmission distance is limited, it is difficult to meet the demand for long-distance data transmission of widely distributed equipment in large industrial facilities. MM20 – t1 t1 t1 t1 eahh media converter effectively solves this problem by taking advantage of the advantages of optical fibre transmission in terms of distance and anti-interference. In large industrial enterprises such as steel mills and cement factories, the plant area is vast and the equipment is extremely dispersed.

By using the media converter with optical fibre, data can be transmitted up to several kilometres away, significantly extending the network coverage. For example, in a steel plant, between the equipment located in the high-temperature smelting area and the central monitoring room located at the far end of the plant, the media converter and optical fibre can be used to stably transmit the data of the equipment’s operation status, process parameters and other data to the monitoring room, so as to facilitate the operators to grasp the production situation in real time, and to make timely decisions to ensure the safety and stability of the production process.

Strengthen network security protection: In the signal conversion at the same time, MM20 – t1 t1 t1 eahh also has a network isolation function, which is of great significance to improve the security of industrial networks. It can effectively block the flow of unnecessary network traffic between different network areas, reducing the scope of potential network attacks on the entire network system threat. In substations in the power industry, networks in different functional areas, such as the primary equipment monitoring network and the secondary equipment protection network, are segregated by this media converter.

Even if the network in a certain region suffers from malicious attacks, the attack can be prevented from spreading to other regions to the maximum extent possible, safeguarding the stable operation of the power system network and ensuring the reliability of power supply. In addition, some of the media converters may also have a simple protocol conversion function, so that the use of different communication protocols network equipment can achieve interoperability, further enhancing the overall security and adaptability of the network.

Brand Background
Founded in 1924 by Richard Hirschmann, the father of the ‘banana plug’, Hirschmann started out as a one-man company and has developed over the past hundred years to become a global industry pioneer in the field of modern communications.

Its business covers a number of important areas such as broadcasting and television transmission technology, enterprise and industrial network solutions, and fieldbus systems. In terms of technological innovation, it built the world’s first fibre-optic Ethernet in 1984, and was the first to introduce ring-redundant Ethernet (HIPER – Ring) in 1990, and has a deep technological accumulation and excellent market reputation in industrial networks and related fields.

With the expertise accumulated from rich experience, Hirschmann’s products are able to maintain high transmission speed and reliability in harsh industrial environments such as high temperature, high pressure, strong electromagnetic interference, etc. Hirschmann has a wide global layout, with production plants in Germany and Hungary, and branches in many European countries, the U.S., and Asia, which enable it to respond quickly to the needs of customers around the world.

Specification
Port Specifications
Ethernet ports: 10/100/1000Base-T adaptive rates are most likely supported, and the RJ-45 connector is a common Ethernet connector type that facilitates connection using standard Cat5e, Cat6, or higher Ethernet cables. Ideally, with standard cables, the Ethernet port can transmit data over a distance of up to 100 metres, which meets the need for short-distance wiring between most devices in industrial sites, and can be seamlessly connected to various Ethernet devices, such as industrial controllers, smart sensors, computers, and so on.

Fibre optic port: Considering the demand for long distance and high bandwidth transmission in industrial scenarios, it is assumed that this media converter is equipped with a fibre optic port. If the media converter is equipped with a multi-mode optical fibre port, the transmission distance may reach 550m when using 50/125μm optical fibre with a transmission rate of 1000Mbps, which is suitable for data interaction between devices in different workshops within a factory, such as connecting devices in different production areas of an electronics manufacturing factory.

If equipped with single-mode fibre ports, using 1310nm wavelength single-mode fibre, the transmission distance can be significantly extended to several kilometres, which is important for cross-factory data communication in large industrial parks or long-distance data transmission scenarios, such as in smart grids, between a substation and a remote monitoring centre. Fibre optic ports may be of SC or LC type, which are easy to plug and unplug and have a solid connection.

Electrical parameters: the operating voltage may be designed to adapt to the common voltage range of industrial environments, such as supporting a wide voltage input of 100 – 240V AC, 50/60Hz AC frequency, which is able to operate stably in different regions and different power supply conditions in industrial sites, reducing the risk of equipment failure due to voltage fluctuations or mismatches.

In terms of DC power supply, DC 12V or other suitable DC voltage may be used for power supply, depending on the design of the internal power management module of the device, DC power supply provides stable power support for the device to meet the requirements of industrial automation scenarios with high power stability. The power consumption of the device depends on the internal circuit design and processing capability, and is optimised as much as possible to reduce operating costs and energy consumption while ensuring efficient data conversion and processing.

Physical specifications: For easy installation and deployment in space-constrained environments such as industrial control cabinets and equipment racks, the device form factor is designed to be compact. It may follow the industry standard installation dimensions such as 1U (44.45mm height) or 2U height, and its width and depth are also adapted to the standard cabinet dimensions, which is convenient for unified cabinet installation and management with other industrial equipment.

Shell selection of durable metal materials, such as aluminium alloy or steel, metal shell not only for the internal precision electronic components to provide physical protection against collision, extrusion and other external damage, but also with electromagnetic shielding to reduce external electromagnetic interference on the normal operation of the equipment, to ensure that the equipment in the complex industrial electromagnetic environment, stable work.

Protocol Support: Based on the versatility of Hussmann products in the field of industrial networking, it is assumed that MM20-M4M49999TAHH supports common industrial Ethernet protocols, such as Modbus TCP, PROFINET, EtherNet/IP, etc. This makes the media converter capable of working with the most common industrial Ethernet protocols, such as Modbus TCP and EtherNet/IP.

This enables the media converter to communicate and interact with different brands and types of industrial automation equipment. For example, in an industrial automation production line that contains multiple brands of controllers and sensors, by supporting Modbus TCP protocol, the media converter can efficiently convert and transmit the data of the devices that use this protocol to achieve the interconnection of the entire production line equipment and collaborative work, reducing the difficulty and cost of system integration.

Performance Advantages
Efficient data conversion performance
Fast signal processing: the internal probability of using high-performance special chips and optimised circuit design, to achieve fast and accurate conversion of optical and electrical signals. In industrial automation production lines, a large amount of sensor data need to be transmitted and processed in real time, MM20 – M4M49999TAHH media converter can complete the signal conversion in a very short period of time, to ensure the timeliness of data.

In automotive production lines, for example, where sensors used to detect the position and size of parts generate a large amount of data per second, the media converter can quickly convert the data transmitted over fibre optics into Ethernet signals for transmission to the back-end control system, thus guaranteeing production efficiency and product quality.

Low-latency data transmission: During the data conversion process, internal algorithms and hardware architecture are optimised to reduce latency as much as possible and ensure real-time data transmission. For industrial applications such as robot control and motion control that require high real-time performance, low-latency data transmission is essential. The media converter controls data latency to a very low level, ensuring that data from the front-end device is transmitted quickly and accurately to the target device, avoiding control errors or production accidents caused by latency.

Excellent Network Adaptability
Multi-rate Adaptation Capability: With powerful rate adaptation function, it can automatically identify and adapt to the different transmission rates of the connected devices. In an enterprise network, devices deployed at different times have different transmission rates, new devices may support 1000Mbps or even higher rates, while old devices may still be at 100Mbps or lower rates. the MM20-M4M49999TAHH media converter is able to intelligently match the different rates of the devices, so that they can work together on the same network, avoiding data transmission delays, loss of data, and other problems caused by mismatched rates. The MM20-M4M49999TAHH media converter can intelligently match these different rate devices so that they can work together in the same network, avoiding the delay and packet loss caused by the rate mismatch, and guaranteeing the stability and smoothness of network data transmission.

Integration of different network media: It effectively achieves the integration of optical fibre network and Ethernet network, which are two different media networks. Optical fibre network has the advantages of long transmission distance, high bandwidth, strong anti-interference ability, etc., while Ethernet network has a wide range of applications and good compatibility.

With this media converter, the advantages of the two networks can be fully exploited, using optical fibre networks for long-distance, high-speed data transmission and Ethernet networks for convenient connection of equipment, building an efficient and stable network architecture for industrial enterprises. For example, in a large factory campus, different workshops are connected to each other via optical fibre to form a backbone network, while the equipment inside the workshops is connected to the media converter via Ethernet, achieving seamless integration of the entire campus network.

High Reliability and Stability
Industrial-grade design standard: Strictly designed and manufactured in accordance with industrial-grade standards, it can adapt to harsh industrial environments. In industrial production, the equipment may face high temperature, low temperature, humidity, dust, vibration and other harsh conditions. MM20 – M4M49999TAHH The internal electronic components of the media converter have been strictly screened and have the characteristics of high temperature resistance, low temperature resistance, humidity resistance, dust resistance, etc., the shell design can effectively prevent dust and water, and the internal structure can withstand a certain degree of vibration and shock, to ensure stable operation of the equipment under a variety of harsh industrial environments.

This ensures the stable operation of the equipment in a variety of harsh industrial environments. For example, the media converter can work reliably in the high-temperature smelting workshop of a steel factory, the underground working environment of a coal mine, etc. to ensure the stability of the network connection.

Redundant design guarantee: some models may adopt redundant power supply design, equipped with two or more power input interfaces, when one power supply fails, the other power supply automatically takes over the work, to ensure continuous operation of the equipment, to avoid data transmission interruption caused by power failure.

In terms of network connection, it may support the link redundancy function, data transmission through multiple network links, when a link fails, the data will be automatically switched to other normal links to ensure uninterrupted network communication. This redundancy design is of great significance in industrial application scenarios that require high network reliability, such as the monitoring network of the power system, the control system of chemical production, etc. It can effectively improve the reliability and stability of the entire industrial network .

Network Security Enhancement
Network isolation function: while performing signal conversion, it realises effective isolation between different network areas. It can prevent unnecessary network traffic from spreading between different networks and reduce the impact of potential network attacks on the entire network system.

For example, in substations in the power industry, networks in different functional areas, such as primary equipment monitoring network and secondary equipment protection network, are isolated by the media converter, so that even if the network in a certain area suffers from a malicious attack, the attack can be prevented from spreading to other areas to the maximum extent possible, to ensure the stable operation of the power system network, and to ensure the reliability of the power supply.

Security protocol support: It may support a variety of network security protocols, such as SSL/TLS encryption protocol, to encrypt the transmitted data, preventing the data from being stolen or tampered with in the transmission process. In the era of Industrial IoT, a large amount of industrial data is transmitted over the network, and data security is crucial.

By supporting security protocols, the MM20 – M4M49999TAHH media converter provides security for industrial data transmission, ensures that enterprise production data and business secrets are not leaked, and meets the strict requirements of industrial enterprises for network security.

Hirschmann Brand Introduction
Hirschmann has a longstanding reputation in industrial networks and related fields, is a technology and market-leading outstanding enterprise. 1924, by the father of the ‘banana plug’ Mr Richard Hirschmann was founded, began as a one-man company, after a century of development, has grown into a modern communications field of the global industry The company was founded in 1924 by Mr Richard Hirschmann, the father of the banana plug.
Hirschmann’s business is extremely wide-ranging and covers a number of important areas. In the field of broadcasting and television transmission technology, its mobile transmission and reception systems use analogue and digital technology to ensure the stable transmission of broadcasting and television signals. In the field of enterprise and industrial network solutions, Hirschmann is a leading provider of efficient and reliable network architectures for complex industrial environments. Fieldbus systems are also an important business segment, enabling accurate and fast data communication between devices in industrial automation processes.

Hussmann products excel in demanding industrial environments. Thanks to their experience and expertise, they maintain high transmission speeds and unrivalled reliability, even at high temperatures, high pressures and in the presence of strong electromagnetic interference. For example, in high-temperature smelting workshops in steel mills, high humidity and dusty environments in coal mines, and strong electromagnetic zones in power substations, Hirschmann’s media converters, switches and other equipment operate stably to ensure the continued stability of industrial production networks.

Hirschmann has an extensive global presence, with production facilities in Germany and Hungary, as well as subsidiaries in many European countries, the United States and Asia. This enables Hirschmann to respond quickly to the needs of customers around the world and to provide timely and professional products and services to industrial companies in different regions. Hirschmann’s products and services are available to industrial companies in all regions.

I. Port and Connection Configuration
Ethernet Port Characteristics: The media converter is most likely equipped with a standard Ethernet port, and most likely supports 10/100/1000Base-T adaptive rate. This means that in real-world application scenarios, it can work seamlessly with many common Ethernet devices, be it industrial controllers and smart sensors in factory automation shops, or computers and servers in corporate office areas. When connected using standard Cat5e and higher grade cables, the Ethernet port can transmit data over distances of up to 100 metres under ideal conditions, which is more than sufficient to meet the need for short-distance cabling between devices in the industrial field and to ensure the stability and reliability of data transmission.

Fibre Optic Port Function: Considering the need for long distance and high bandwidth transmission in industrial networks, the MM20 – M2M29999EAHH may be equipped with a fibre optic port. If a multimode fibre port is available, the transmission distance is expected to be up to 550m when using 50/125μm size multimode fibre with the data rate set to 1000Mbps.

This configuration is extremely advantageous in scenarios where data is connected between different workshops within a factory, such as in an automotive manufacturing plant, where equipment data interactions between the stamping and welding shops can be transmitted at high speeds and stably via multimode optical fibre with this media converter. When equipped with a single-mode fibre port using 1310nm wavelength single-mode fibre, the transmission distance can be significantly extended to several kilometres, which is crucial for cross-regional network connectivity in large industrial parks, such as data communication between different factories, or long-distance data transmission between a substation and a remote monitoring centre in a smart grid. It can effectively break through the geographical distance limitations to ensure reliable data transmission.

Data Conversion Efficiency
Precise signal conversion: One of the core functions is to achieve efficient conversion of different network signals. In industrial automation production lines, front-end sensors often form a high-speed data acquisition network through optical fibers to ensure the rapid transmission of large amounts of real-time data, while back-end control systems and data processing centres mostly use Ethernet architecture for data storage and analysis.

The media converter accurately converts optical signals transmitted over fibre optics into electrical signals that are recognised by Ethernet and vice versa. In an electronics manufacturing plant, for example, high-precision sensors on the production line used to check the quality of the product transmit the inspection data via optical fibre to the media converter, which quickly converts it into Ethernet signals and transmits them to the production management system at the back end, providing timely and accurate data support for production decision-making and ensuring the efficient and stable operation of the production line.

Intelligent Rate Adaptation: In complex industrial network environments, the data transmission rate of different devices varies greatly, and the MM20-M2M29999EAHH is equipped with a rate adaptation function, which can automatically sense the transmission rate of the devices connected to it and carry out intelligent matching and co-ordination. When enterprises are upgrading their networks, new high-performance devices may have a transmission rate of 1000Mbps or even higher, while some old devices still maintain a rate of 100Mbps.

Through the media converter, these devices with different rates can work together in the same network, avoiding data transmission delays, packet loss and even interruptions due to rate mismatch, which greatly improves the stability and compatibility of network data transmission, and ensures smooth transmission of various types of data in the industrial production process.

Network Expansion and Security Enhancement
Long-distance transmission breakthrough: Using the advantages of optical fibre transmission in terms of distance and anti-interference, the MM20-M2M29999EAHH media converter effectively solves the problem of limited transmission distance of traditional Ethernet twisted-pair cable. In large industrial facilities, such as steel mills and cement factories, the plant area is extensive and the distribution of equipment is extremely dispersed.

Traditional Ethernet twisted-pair connections are difficult to meet the demand for long-distance data transmission, but by using this media converter with optical fibre, data can be transmitted up to several kilometres away, which significantly extends the coverage of the network. For example, in a steel plant, between the equipment located in the high-temperature smelting area and the central monitoring room located at the far end of the plant, the media converter and optical fibre can be used to stably transmit the data of the equipment’s operation status, process parameters and other data to the monitoring room, so as to facilitate the operators to grasp the production situation in real time, and to make timely decisions to ensure the safety and stability of the production process.

Network security protection: In addition to signal conversion, the MM20-M2M29999EAHH also has a network isolation function, which is of great significance in enhancing the security of industrial networks. It can effectively block the flow of unnecessary network traffic between different network areas, reducing the scope of potential network attacks on the entire network system. In substations in the power industry, networks in different functional areas, such as the primary equipment monitoring network and the secondary equipment protection network, are segregated by this media converter.

Even if the network in a certain region suffers from malicious attacks, the attack can be prevented from spreading to other regions to the maximum extent possible, safeguarding the stable operation of the power system network and ensuring the reliability of power supply. In addition, some of the media converters may also have a simple protocol conversion function, so that the use of different communication protocols network equipment can achieve interoperability, further enhancing the overall security and adaptability of the network.