Hirschmann MM20-G2 t1 t1 sahh media converter
Device model description
The Industrial Ethernet series MICE (Modular Industrial Communication Equipment) consists of basic switching modules and media modules.
These devices are manageable
The basic module contains all the functions of this industrial switch except for the interfaces to the LAN.
Pluggable media modules provide these interfaces.
They differ in the number of interfaces and the type of media connected to the network segments.
Expansion modules add 2 media module slots to the basic module.
For simplicity, basic switching modules with various plug-in media modules are referred to as MICE in this document.
MS20-… Device variants are modular switches with up to 8 ×, 16 ×, or 24 × 10/100 Mbit/s Ethernet ports. You can select the media for the ports via the media module.
MS30-… The device model is a modular switch with up to 8 ×, 16 ×, or 24 × 10/100 Mbit/s Ethernet ports. 24 × 10/100 Mbit/s Ethernet ports and up to 2 × additional Gigabit ports (1000 Mbit/s Ethernet) modular switch. (1000 Mbit/s Ethernet). You can select the media for the ports using the media module. The media module selects the media for the ports.
The basic module of the MS20/MS30 contains all functional units such as: switching functions, management functions, redundancy functions:
switching functions, management functions, redundancy functions, display controls, voltage connections, management connections, adjustable controls, and media module slots.
MS20
Optional additional number of ports, preferred number of 100 Mbit/s ports, temperature range, voltage range, certificates and software variants.
More port numbers, temperature range, voltage range, certificates and software variants can be selected.
MM22-T1T1T1 PoE Media Module
The MM22-T1T1T1 PoE Media Module (deep module design) supports Power over Ethernet (PoE) according to the IEEE 802.3af standard.
It allows, for example, the connection and remote provisioning of IP telephones (voice over IP), webcams, sensors, printer servers, and WLAN access points via 10BASE T/100BASE-TX. With PoE, these end devices can be powered by twisted pair cables.
The MM22-T1T1T1 Media Module has four 10BASE-T/100BASE-TX ports (RJ45 connections) for connecting network segments or PoE end devices (PDs, Powered Devices) up to Category 0 (or Category 3, respectively).
The current is supplied via a free pair (spare pair); there is no electrical insulation between the individual ports.
The Hirschmann MM20 – G2 t1 t1 sahh media converter is a key device for industrial networks from Hirschmann and plays an important role in enabling the conversion of data transfer between different network media and protocols. As an experienced manufacturer of solutions for industrial networks, Hirschmann has developed a number of features for this media converter.
I. Ports and Connectivity
MM20 – G2 t1 t1 sahh Media converters are usually equipped with several types of ports to suit the connectivity needs of different network devices. They may have Ethernet ports, which often support 10/100/1000Base – T adaptive rate, and can be easily connected to all kinds of devices that use Ethernet connection, such as computers, industrial controllers, servers and so on. The Ethernet ports can transmit data over distances of up to 100 metres when using standard Cat5e and above cables, allowing for short distance connections between devices in common industrial environments.
At the same time, the media converter is likely to be equipped with a fibre optic port, which supports both singlemode and multimode fibre optic connections. In the case of multimode fibre, the 50/125μm format allows for transmission distances of up to 550 metres at a data rate of 1000Mbps, while single-mode fibre and 1310nm wavelengths allow for distances of up to several kilometres.
This long-distance transmission capability enables high-speed and stable data transmission between devices in different areas in large factory parks, intelligent traffic systems, energy and power scenarios. For example, in an intelligent traffic system, widely distributed traffic cameras can be connected to the media converter via optical fibre, and the collected HD video data can be transmitted to a monitoring centre several kilometres away for processing and storage.
Second, the data conversion function
Signal conversion: One of the core functions of the media converter is to convert different network signals to each other. In industrial automation lines, where one end of the line uses fibre optics to transmit data and the other relies on Ethernet for communication, the MM20 – G2 t1 t1 sahh media converters precisely convert optical signals transmitted by fibre optics into electrical signals for Ethernet and vice versa, ensuring a smooth transfer of data between the different media.
For example, in a factory automation system, where the front-end sensors used to collect production data form a high-speed backbone network via optical fibre, and the back-end production management computer is connected using Ethernet, the media converter can establish a stable data transmission bridge between the two, ensuring that the production data can be transmitted to the management system in a timely and accurate manner, providing a basis for production decision-making.
Rate Adaptation: In the actual network environment, there may be differences in the transmission rate of different devices. mm20 – g2 t1 t1 sahh media converter is equipped with a rate adaptation function, which is able to automatically identify the transmission rate of the devices connected to it, and carry out matching and coordination.
Assuming that in the process of upgrading the network of an enterprise, the transmission rate of some old devices is 100Mbps, while the newly purchased high-performance devices can reach a rate of 1,000Mbps, through the media converter, it can make these devices with different rates work together in the same network, avoiding the problem of data transmission lagging or interruption due to the mismatch of rates, and guaranteeing the stability and compatibility of the network data transmission.
Network Extension and Security Enhancement
Extend transmission distance: Taking advantage of optical fibre transmission, MM20-G2 t1 t1 sahh media converter effectively solves the problem of limited transmission distance of Ethernet twisted-pair cable.
In some large industrial facilities, such as steel mills, petrochemical plants, etc., the plant area is vast and the distribution of equipment is relatively scattered.
The traditional Ethernet twisted pair connection is difficult to meet the demand for long-distance data transmission, but the media converter with optical fibre can transmit data to several kilometres away, greatly expanding the network coverage.
In the case of a steel mill, for example, the distance between the equipment in the production halls and the central control room on the other side of the mill is relatively long. With the media converter and fibre optics, the operating data of the production equipment can be transmitted stably to the central control room, making it easier for the operators to monitor and manage the production process in real time.
Network isolation and security enhancement: While converting signals, the MM20 – G2 t1 t1 sahh media converter also enables isolation between different networks, which is important for enhancing network security. It can effectively prevent unwanted network traffic from propagating between different network areas, reducing the scope of potential network attacks on the entire network system .
For example, in the power system, the networks of different functional areas in the substation are isolated by media converters, so that even if the network in a certain area is subjected to malicious attacks, the attacks can be prevented from spreading to other areas to the greatest extent possible, so as to ensure the stable operation of the power system network. In addition, some of the media converters may also have a simple protocol conversion function, so that network devices using different protocols can communicate, further improving the interoperability and overall security of the network.








