Year: 2025

Product Overview

VMIVME-5532L is a high-performance and easy-to-use VMEbus fiber optic repeater link that connects two or more VMEbus systems through fiber optic cables. The repeater link consists of a set of two boards (VMIVME-5532M as the motherboard and VMIVMME-5532S as the slave board), allowing the I/O board of a VMEbus slave located in one VMEbus chassis to be controlled by a VMEbus host located in another chassis, while supporting local control from a local VMEbus host in the chassis, achieving multi host functionality from the chassis.

Core functions and features

Key Features

Software transparency, direct communication from the host chassis to the slave chassis, no software overhead (one-way link control, two-way data transmission), supports plug and play operation.

In register enabled mode, in addition to basic functions, it also includes registers in the short I/O space that involve multi host operations from the chassis.

Supports 8-bit, 16 bit, and 32-bit data transmission, and supports 16 bit, 24 bit, and 32-bit addressing.

The VMEbus system is completely electrically isolated from each other, with fiber optic cables up to 6560 feet (2000 meters) in length.

Compared to standard repeaters, the advantages include compact cables, strong noise resistance, high voltage isolation, and no electromagnetic interference from cables.

Slave repeaters include bus arbitrators, bus requesters, system controllers, and control/status registers, used to operate and monitor slave chassis in redundant repeater links or multi host applications.

Features

Overview

The master VMEbus chassis can communicate with multiple slave chassis by using multiple relay links in a star configuration. Any VMEbus host in the host chassis can access (read or write) any slave board in the slave chassis, and only non interrupt slave boards are allowed in the slave chassis. When a VMEbus host (usually a CPU board) addresses any card in the slave chassis, the link between the host chassis and the slave chassis is automatically established. Whenever a host in the main chassis issues a VMEbus read/write cycle, it will be repeated to the slave chassis. If any slave board in the slave chassis responds to the address, data transfer (read or write) will occur between the chassis and a data transfer acknowledgement (DTACK) will be generated to the host (in the main chassis) to complete the cycle.

VMEbus compatibility

Compliant with VMEbus specification revised version C1, supporting A32, A24, A16, as well as D32, D16, D08 (EO). Among them, VMIVME-5532M is a DTB slave (used for the main chassis), and VMIVME-5532S is a DTB master (used for the sub chassis), both with dual height and single slot external specifications.

Arbitrator and Requester

Arbitrator: SGL

Requester: ROR, only supports bus request level 3 (BR3 *)

BG3IN * – BG3OUT * Maximum latency: 100 ns

BG3IN * – BBUSY * Maximum latency: 200 ns

Link register (available when enabled)

Including board recognition, burst mode, host bus authorization, VMEbus activity (slave chassis), burst mode key, VMEbus key, Sysreset enable key, slave chassis reset key, etc.

Repeat to the VMEbus signal from the chassis

A1 to A31, D0 to D31、DS0*、DS1*、WRITE*、SYSRESET*、SYSCLK、AM0、AM2、AM4、AM5、LWORD*  And IACK * (note: the following signals are regenerated from the chassis rather than sent through fiber optic cables: SYSCLK, AM0, AM1, AM3, and IACK *).

Return the VMEbus signal to the host box

D0 to D31, DTACK*

Active but non repetitive VMEbus signals from the chassis

BR0*-BR3*、BGIN0*-BGIN3*、BG0OUT*-BG3OUT*、BBSY*

Other parameters

Address modifier: 09, 0D, 29, 2D, 39, 3D

Read cycle overhead: maximum 4.0 µ s

Write cycle cost: maximum 4.0 µ s

Transmission rate (maximum) (10 foot cable length): Assuming the slave board in the chassis responds within 250 ns, with a minimum of 1MB/s (D32)

Cable specifications

Mode: Multi mode

Length: 5 to 6560 feet (1.5 to 2000 meters)

Fiber size: 62.5 microns

Package size: 125 microns

Buffer layer size: 900 microns

Maximum attenuation at 1300nm (including connector): 9.0 dB

Bandwidth at 1300nm: 500 MHz km

Protective cover length: 20 to 60 mm

U. L./NEC rating: OFNP

Connector style: ST, 2.5mm bayonet, both ends

Quantity required for each link: 2 (cables that meet this specification are provided with VMIVME-5532L. If you need to order cables separately, please refer to specification number VMICBL-000-F3-XXX)

Physical/Environmental Specifications

Size: Double height (6U) board 160 × 233.35 mm

Power requirements: VMIVME-5532S is a typical 2A at 5 VDC, with a maximum of 2.5 A; VMIVME-5532M is a typical 2A at 5 VDC, with a maximum of 2.5 A

Temperature: Operating temperature 0 to 65 ° C, storage temperature -20 to 85 ° C

Humidity: Relative humidity during operation is 20% to 80%, with no condensation

Altitude: up to 10000 feet (3048 meters) during operation

Cooling: forced air convection

Ordering Options

In VMIVME-5532L, A represents the type of fiber optic connector (0=ceramic core ST connector, 1=stainless steel core ST connector), and BC represents the cable length (00=no cable, 01=5 feet (1.5 m) and other options).

Only the VMIVME-5532M and VMIVMME-5532S cards have corresponding ordering options, with ABC of 000 (options reserved for future use).

The link includes one VMIVME-5532M (master) board, one VMIVME-5532S (slave) board, and two cable assemblies.

Connector data

Compatible connector: ST connector

Printed Circuit Board Fiber Optic Connectors: Fiber Optic Receiver HFBR-2416 (HP), Fiber Optic Transmitter HFBR-1414 (HP)

Product Overview

VMIVME-5531L is a high-performance and easy-to-use VMEbus fiber optic repeater link that connects two or more VMEbus systems through fiber optic cables. The repeater link consists of a set of two boards, allowing the VMEbus slave I/O board located in one VMEbus chassis to be controlled by a VMEbus host located in another chassis. The VMEbus chassis containing the VMEbus host is called the host chassis, while the VMEbus slave board is located in the slave chassis.

Core functions and features

Key Features

Software transparency, direct communication from the host chassis to the slave chassis, without software overhead (one-way link control, two-way data transmission).

Plug and play operation, supports 8-bit, 16 bit, and 32-bit data transmission (6U slave), supports 16 bit, 24 bit, and 32-bit addressing (6U slave), supports 8-bit, 16 bit data, 16 bit, and 24 bit addresses (3U slave).

The VMEbus system is completely electrically isolated from each other, with fiber optic cables up to 6560 feet (2000 meters) in length.

Compared to standard repeaters, the advantages include compact cables, strong noise resistance, high voltage isolation, and no electromagnetic interference from cables.

A VME to VME link consists of two boards and two fiber optic cables (motherboard: 6U, slave board: 6U or 3U).

Features

Overview

The master VMEbus chassis can communicate with multiple slave chassis by using multiple relay links in a star configuration. Any VMEbus host in the host chassis can access (read or write) any slave board in the slave chassis, and only non interrupt slave boards are allowed in the slave chassis. When a VMEbus host (usually a CPU board) addresses any card in the slave chassis, the link between the host chassis and the slave chassis is automatically established. Whenever a host in the main chassis issues a VMEbus read/write cycle, it will be repeated to the slave chassis. If any slave board in the slave chassis responds to the address, data transfer (read or write) will occur between the chassis and a data transfer acknowledgement (DTACK) will be generated to the host (in the main chassis) to complete the cycle.

VMEbus compatibility

Compliant with VMEbus specification revised version C1, supporting A32, A24, A16, as well as D32, D16, D08 (EO). Among them, VMIVME-5531M is a DTB slave (used for the main chassis), and VMIVME-5531S is a DTB master (used for the sub chassis).

Appearance specifications

Dual height, single slot: 5531M, 5531S

Single height, single slot: 5531S

Repeat to the VMEbus signal from the chassis

6U: A1 to A31, D0 to D31, DS0 *, DS1 *, WHITE *, SYSRESET *, AM2, AM4, AM5, and LWORD*

3U slave: A1 to A23, D0 to D15, DS0 *, DS1 *, WRITE *, SYSRESET *, AM2, AM4, AM5, and LWORD*

Return the VMEbus signal to the host box

6U: D0 to D31, DTACK*

3U: D0 to D15, DTACK*

Other parameters

Address modifier: (09, 0D), 3, 29, 2D, 39, 3D

Read cycle overhead: maximum 4.0 μ s

Write cycle cost: maximum 4.0 μ s

Transmission rate (maximum) (10 foot cable length): Assuming the slave board in the chassis responds within 250ns, with a minimum of 1MB/s (D32) (applicable to 6U)

Cable specifications

Mode: Multi mode

Length: 5 to 6560 feet (1.5 to 2000 meters)

Fiber size: 62.5 microns

Package size: 125 microns

Buffer layer size: 900 microns

Maximum attenuation at 1300nm: 9.0dB (including connector)

Bandwidth at 1300nm: 500MHz km

Protective cover length: 20 to 60mm

U. L./NEC rating: OFNP

Connector style: ST, 2.5mm bayonet, both ends

Quantity required for each link: 2 (cables that meet this specification are provided with VMIVME-5531L. If you need to order cables separately, please refer to specification number VMICBL-000-F3-xxx)

Physical/Environmental Specifications

Size: Dual height (6U) board 160 × 233.35mm, single height (3U) board 160 × 100.0mm (for slave only)

Power requirements: VMIVME-5531S and VMIVME-5531M are both typical 2A at 5VDC, with a maximum of 3.0A

Temperature: Operating temperature 0 to+65 ° C, storage temperature -20 to+85 ° C

Altitude: 0-10000 feet (3000m) during operation

Humidity: Relative humidity during operation is 20% to 80%, with no condensation

Cooling: forced air convection

Mean Time Between Failures (MTBF): 424895 hours, 431525 hours

Ordering Options

In VMIVME-5531L, A represents the slave specifications (0=6U slave, 1=3U slave), BC=00 represents unused, and D, E, F represent cable length and other information.

Only the VMIVME-5531M and VMIVMME-5531S cards have corresponding ordering options.

The link includes one VMIVME-5531M board, one VMIVME-5531S board, and two cable assemblies.

Connector data

Compatible connector: ST connector

Fiber optic receiver: HFBR-2416 (HP)

Fiber optic transmitter: HFBR-1414 (HP)

Printed circuit board fiber optic connector

Product Overview

VMIVME-4514A is a 16 channel scanning analog I/O board with built-in testing capabilities and P2 I/O connections. It provides 16 analog output channels and 16 analog input channels, with both input and output resolutions of 12 bits. Each channel of the analog output is designed with a sample and hold (S&H) output, and 16 analog inputs are digitized by a 12 bit analog-to-digital converter (ADC) controlled by a scanner, which can store data in dual port memory.

Core functions and features

Main functions

Continuously digitize all input channels and store the results in dedicated channel dual port registers (automatic scanning mode).

It has three A/D operation modes: automatic scanning mode when powered on, random polarization mode, and scanning polarization mode.

Supports P2 I/O connection, built-in onboard testing function, capable of testing 100% of active components.

Using semiconductor output switches does not affect accuracy (output impedance 0.1 Ω).

Analog input characteristics

16 single ended/differential (SE/Diff) analog input channels, 12 bit A/D converter.

Supports unipolar (0 to+10 V, 0 to+5 V) or bipolar (± 2.5 V, ± 5 V, ± 10 V) inputs.

A/D throughput of 40 kHz, optional low-pass filter, with overvoltage protection function.

Input relevant parameters: A/D conversion time of 15 µ s, acquisition time of 10 µ s, common mode range of ± 11 V (maximum), common mode rejection ratio of 82 dB, maximum input bias current of 2 nA, overvoltage protection of ± 40 V (maximum), data transmission type of D16.

Accuracy: 0.04% range ± 2 mV, can be calibrated to 0.02% ± 0.5 mV.

Analog output characteristics

16 sample and hold (S&H) analog output channels, 12 bit D/A converter.

The output has short-circuit protection and supports unipolar (0 to+10 V, 0 to 5 V) or bipolar (± 2.5 V, ± 5 V, ± 10 V) output.

The program can choose a scanning rate to provide better response for complex output functions, with an output current of 10 mA.

Output related parameters: resolution of 12 bits (per channel S&H), output impedance of 0.1 Ω, total error of 0.05% of full-scale range, and maximum setup time of 1.7 ms to reach 1 LSB.

Refresh update rate: default 550 Hz, fast refresh 1600 Hz (note: output refresh temporarily stops during input analog-to-digital conversion, so the output refresh rate decreases with the increase of analog-to-digital conversion rate. In the worst case scenario of automatic scanning mode, the default refresh rate is 300 Hz, and fast refresh is 900 Hz).

Operation Mode

Automatic scanning mode: Through power on system reset or program selection execution, all channels are continuously scanned, and digital data is stored in 16 16 bit dual port registers. It only needs to be read from the dual port registers without further programming.

Random polling mode: It is necessary to control the program to generate a single transition, and determine whether the transition is completed through the polling transition end status bit.

Scanning polarization mode: Perform a single scan of all channels, and determine whether the scan is complete through the polarization scan end control bit.

Other Features

Board address and VMEbus access

The physical address of the board can be selected through jumper wires on the board, and decoding the VMEbus address lines A06 to A15 is used for board selection.

The address modification bit is selected and decoded through jumper wires, supporting non privileged short I/O, monitoring short I/O, or both. The factory is configured to monitor short I/O.

Data transmission and format

Output data transmission: The data of each analog output channel is directly written to the RAM location dedicated to a specific channel on the board, and then periodically retrieved from the RAM and converted into analog voltage, which is transmitted to one of the 16 output sample and hold buffers.

Analog input format: The analog input is first digitized, and then the 12 bit digital value (D11 to D00) is read from a single storage word position in the channel specific dual port register. In binary complement mode, the high four bits (D15, D14, D13, D12) are read as sign extensions of the 12 bit digital value, otherwise they are read as logical zeros.

Testing and Resetting

Simulated I/O testing mode: Built in testing logic supports testing all active components (including output switches) on the board, supports real-time and offline testing, and utilizes the ADC multiplexer on the board.

Memory testing: Designed with onboard dual port memory, additional operational verification can be performed by performing memory diagnostics.

System reset: Initialize the board to a state where all analog outputs and output connectors (P2) are disconnected through the VMEbus application system reset signal.

Front panel malfunction LED

If an error occurs during the diagnostic process, the software controlled LED will light up to visually indicate the fault. The LED will be reset and lit by the system during power up, and will turn off after successful diagnosis.

Bus interface and physical environment characteristics

Bus interface compatibility: Compliant with VMEbus specification Rev. C. 1, with features such as A16:29, 2D: D16, D08 (EO) (slave), and 6U external specifications.

Physical characteristics: Standard VME double width board, size 160 × 233.5 mm.

Environmental characteristics: Operating temperature from 0 to 55 ° C, storage temperature from -40 to+85 ° C, relative humidity from 20 to 80% (non condensing), using convection cooling.

Power requirements:+5 VDC (± 5%), maximum 5.6 A, typical 3.0 A.

Connector: Standard P2 user I/O (with extended ground pins on P1 and P2).

Mean Time Between Failures (MTBF): 29800 hours (217F).

Application field

Including factory automation and instrumentation, process control, laboratory instruments, machine monitoring, data acquisition systems, simulation and training, etc.

Product Overview

VMIVME-4150 is a 12 bit analog output board that provides 12 fully isolated high-quality 12 bit analog output channels on a single 6U spec VMEbus board. Each channel is electrically isolated from all other channels and VMEbus, with multiple output ranges and functions, suitable for various industrial scenarios.

​Core functions and parameters

Key Features

12 completely isolated analog output channels, with isolation voltages of up to 1000 Vpk between channels and between channels and the bus.

12 bit resolution, bipolar voltage output range can be selected as ± 2.5 V, ± 5 V, or ± 10 V; unipolar voltage output range can be selected as 0 to 2.5 V, 0 to 5 V, or 0 to 10 V.

The voltage output has a 10 mA load capacity within the full ± 10 V range, with optional 4 to 20 mA, 0 to 20 mA, or 5 to 25 mA current loop outputs.

The voltage output accuracy is 0.05%, and the current loop output accuracy is 0.08%. There are 4, 8, or 12 channel configurations to choose from.

Using optical data coupling to provide complete galvanic isolation, static read back data registers simplify program control, and the front-end panel can be used for on-site connections.

The program controlled voltage output connection/disconnection operation facilitates system testing.

working principle

Internal functional structure

Composed of VMEbus interface, channel control, isolated analog output, and DC/DC power converter.

VMEbus interface: Communication with VMEbus is controlled by a single electrically programmable logic device (EPLD). Data and control registers are distributed in three channels to control the EPLD, respond to bus data transmission requests and control data flow, and generate data transmission acknowledgement (DTACK *) after completion of transmission.

Channel control: The data transmission control of the output D/A converter is divided into three identical 4-channel groups, each group is allocated and controlled by an EPLD, supporting optional configurations of 4, 8, or 12 channels. Each channel control EPLD contains four data registers, which receive channel data words from VMEbus and provide independent data serializers for each channel.

analog output channel

Isolation: Each output channel is isolated from VMEbus and all other channels through an isolated DC/DC converter and four optocouplers. The DC/DC converter provides ± 15 VDC isolated power supply, while the optocouplers isolate digital control signals.

Digital to Analog Conversion: A serial digital to analog (D/A) converter receives a 12 bit data word and generates a specific range of output voltage. The output module converts it to a specified voltage or current output according to the configuration.

Voltage and current output: All outputs are factory configured as unipolar voltage, bipolar voltage, or constant current. The voltage output module includes a unity gain buffer and an output switch, while the current output module includes a voltage current converter and a transmission transistor.

DC/DC power converter: Each channel contains a DC/DC converter that obtains isolated ± 15 VDC power from the VMEbus+5 VDC power bus to supply power to the isolated portion of the channel.

Configuration and Installation

Unboxing process

Some components are sensitive to electrostatic discharge, and unused boards should be stored in their original packaging. When placed on the workbench, it is recommended to insert conductive materials underneath. After receiving the goods, it is necessary to check whether there is any transportation damage. If there is, a claim should be made to the carrier and VMIC should be notified. When installing or removing the board, power off and insert the board correctly into the chassis slot.

run setup

The board address and I/O access mode are controlled by replaceable jumpers on the board, including address modifier jumpers (E15), base address selection jumpers (E13, E14, E16), and output range selection jumpers. Different jumper configurations correspond to different functions and parameters.

Bipolar voltage output: It can be configured as 2.5 V, 5 V, or 10 V through user installed jumpers, and different channels correspond to different jumpers and adjustable potentiometers.

Unipolar voltage output: configurable for 0 to 2.5 V, 0 to 5 V, or 0 to 10 V, with corresponding jumpers and adjustment components.

Current loop output: Each channel has jumper wires that can be configured with internal or external power supply, supporting different current ranges.

calibration

Before leaving the factory, it has been fully calibrated. If recalibration is required, digital multimeters, card cages, expansion cards, resistors, and other equipment need to be prepared to calibrate the bipolar voltage output, unipolar voltage output, and current output according to specific steps. After calibration, appropriate sealing agents need to be used to re seal and adjust the components.

I/O cable and front-end panel connector configuration

The front-end input connectors (P3 and P4) are standard ultra small 37 pin female D-shaped connectors with specific pin layouts and assignments, corresponding to different outputs and functions.

Programming

Register Mapping

Communication is carried out through 16 block control, status, data, and identification registers mapped to the A16 short I/O space or standard A24 data space, including board identification registers (BIR), control/status registers (CSR), output data registers (ODR), etc.

Board Identification Register (BIR): Contains the identification code (22 million hexadecimal) of the VMIVME-4150 board, located in the first two words of the board base address, and is read-only.

Control/Status Register (CSR): Provides control and monitoring of board functions, including output enable, output load cycle status, data encoding, self-test LED, etc. Each bit has specific functions.

Output Data Register (ODR): Each of the 12 analog outputs has a dedicated 12 bit output data register that supports read and write operations. The data is transmitted to the output D/A converter in a serial manner.

Reset operation

The system reset operation will reset all read and write registers to zero, causing the board to be in a specific state, such as analog output level, status, data encoding, and front-end panel LED status, all of which will change accordingly.

Analog output control

The output register and data format are controlled by CSR bit D12 and can be in offset binary format or binary complement format. The output range is determined by the jumper on the board, and the voltage output can be controlled by the bit in CSR to determine the connection status with the output connector. The data is transmitted from the output data register to the output D/A converter through an internal output load cycle, during which there is a corresponding busy flag indication.

maintenance

Provided information on product maintenance and upkeep, such as checking system power, software, configuration, connections, etc. in case of product malfunction. We do not recommend user level repairs. If you need to return the item, please contact VMIC to obtain a Return Merchandise Authorization (RMA) number. The drawings and tables in the manual are for reference only.

Product Overview

VMIVME-3126 is an 8-channel or 16 channel high-resolution fully isolated analog-to-digital converter (ADC) board that can accept 2-wire isolated signals ranging from 50 mV to 10 V as input, providing isolation between channels and between channels and VMEbus. Each input is sampled and digitized by a dedicated 24 bit analog-to-digital converter, which automatically scans all inputs after on-board self-test is completed upon power on. Its accuracy is optimized through internal gain and offset correction, which are applied by a digital signal processor (DSP) in real-time mode and determined in calibration mode.

Core functions and parameters

Key Features

8 or 16 isolated input channels with source protection, 16 bit data.

The isolation voltage between channels and between channels and VMEbus is 1500 VDC (1000 VAC).

Each channel is equipped with a dedicated digitizer with an input range of ± 50 mV to ± 10 V, which can be selected by software according to the channel.

Software controlled bandwidth, 0.05 to 26 Hz (implemented through an internal DSP with a 6th order low-pass filter).

Real time offset and gain correction based on DSP, with E ² PROM storage of calibration coefficients supported by DSP (without fine adjustment potentiometer).

The conversion rate per channel is 100 SPS (samples per second).

Software controlled RTD excitation (200 mA/400 mA per channel), software controlled open circuit sensor detection.

Supported by VMIC’s I/O controller, optional current termination resistors and optional increase in input range are available.

Application field

Including power plant monitoring, machine monitoring, data acquisition, as well as applications related to RTDs, strain gauges, and thermocouples.

Features

VMEbus access and compatibility: The response to address modifiers can be selected through jumpers, including A24 or A16 address space, monitoring or user permissions (or both), D16/D8 (EO) DTB slave, with a 6U external specification.

Board address: The VMEbus base address is configured by jumper fields, and each address A23 to A8 has a jumper, so the address space occupied by the board is 256 bytes.

Operation Mode

Sampling mode: After successful onboard self-test, all inputs are sampled simultaneously when powered on.

Calibration mode: Enter calibration mode by setting the bits in the board and status register (BSR). Each channel is calibrated by the DSP using up to seven external calibration voltage inputs. The gain and offset coefficients are stored in the DSP for real-time calibration. Users can set another bit in the BSR to write the coefficients to the E ² PROM or input their own gain and offset coefficients.

Configuration mode: Enter configuration mode by setting the bit in BSR, and each channel can be individually configured with range, filter frequency, data output format, and input type (normal, RTD excitation, open circuit sensor detection).

Automatic zeroing mode: Enter the automatic zeroing mode by setting the bit in BSR. In this mode, each input is disconnected from the field through an electronic switch, connected to a ground reference, digitized, and compared with the ideal ground reading. Adjust the offset coefficient to eliminate this difference. This technology can compensate for temperature changes without calibration operations.

Self check: After the system or software is reset, it automatically runs a self check to test the onboard RAM and each ADC. The status register indicates the success or failure status of these components.

Front panel indicator: The program controlled front panel LED lights up red during startup, calibration, and channel reconfiguration, and turns off after successfully completing the above modes.

Board Identification: The Board Identification Register (BIR) contains the VMIVME-3126 identification code.

Input characteristics

Number of input channels: 8 or 16 isolated 2-wire channels, each with an active protection pin.

Isolation voltage: 1500 VDC and 1000 VAC between channels and between channels and VME.

Input range (software control)

Bipolar: ± 50 mV, ± 100 mV, ± 500 mV, ± 1 V, ± 5 V, ± 10 V

Monopolar: 0 to 50 mV, 0 to 100 mV, 0 to 500 mV, 0 to 1 V, 0 to 5 V, 0 to 10 V

Input filter: 0.05 to 26 Hz low-pass, 6th order, filter cut-off frequency controlled by software, filtering executed by DSP software, approximate Bessel response.

Accuracy: The accuracy of the full-scale range varies in different ranges, such as ± 10 V, ± 5 V, 0-10 V, 0-5 V for 0.0030% full-scale, ± 1 V for 0.0076% full-scale, etc. (applicable after calibration of the selected input voltage range).

Stability: The temperature drift is ± V/° C, and the offset error caused by temperature can be eliminated by automatic zeroing.

Input noise: The typical and maximum noise varies under different filter settings and ranges, with noise units in μ V RMS.

Bandwidth of each input: DC to Fc, Fc is 0.05 to 26 Hz (default cutoff frequency is 26 Hz).

Input impedance: minimum, powered on (not applicable to boards equipped with current input options).

Channel crosstalk: The maximum is -150 dB at 1 kHz and Fc=1 Hz.

Isolation mode suppression: 160 dB at 60 Hz and Fc=1 Hz.

Overvoltage protection: ± 25 V wire to wire.

RTD excitation (software control per channel): typical 20 PPM/° C, maximum 20%.

Open circuit sensor detection (controlled by software for each channel): It functions normally in all ranges below ± 1 V (0-1 V).

Channel protection: Active output with unity gain and 1 k Ω source impedance.

Current terminal resistance: see the available options section.

Transmission characteristics

Transfer function: E IN=E LO+[E fsr × 65536N ADC], where E IN is the channel input voltage, E LO

For the lower limit of the input range, E fsr is the full-scale input range, and N ADC is the output code.

Resolution: 16 bits.

Input sampling: All inputs are sampled simultaneously.

Integral nonlinearity: maximum ± 0.005% compared to the optimal straight line.

Channel sampling rate: 100 SPS per channel, total 1600 SPS.

Data encoding: Software programmable, binary complement or straight/offset binary.

Data buffer memory

Buffer size: 16 consecutive 16 bit data words.

Access time: 400 ns from DS to DTACK.

VMEbus access: D8 or D16.

Available options (see ordering options)

Number of input channels: 8 or 16 2-wire channels.

Current terminal resistor: a resistor placed at both ends of the input, with a maximum continuous input current of 25 mA (calibrated input specified in current units rather than voltage units).

Increase input range: The input structure can handle an input range of up to ± 200 VDC.

Physical/Environmental Characteristics

Temperature range: working (standard VME slot) 0 to+65 ° C, storage -40 to+85 ° C.

Humidity: 10 to 80% relative humidity, no condensation.

Altitude: Working up to 10000 feet (3048 meters).

Cooling: forced air convection (standard VME slot).

Size: Dual height European card (6U) board, 160 x 233.35mm.

Weight: Maximum 700 g.

Input connectors: Two 64 pin DIN connectors.

Connector data

Recommended style for connecting components P3 and P4 I/O connectors

64 pin, compatible connector (96 pin discrete) AMP 925486-1*

Discrete line, female pressure contact point (64 pin discrete) AMP 530151-6**

(64 pin connector) connector housing Harting 09 02 064 0501

Note: * The middle row is not connected; **AMP crimping tool part number 90301-2.

Power requirements

+5 VDC (± 5%), maximum 2.8 A.

Mean Time Between Failures (MTBF)

97850 hours (217F).

Product Overview

VMIVME-3100 is a mid performance 12 bit analog-to-digital converter (ADC) board that supports 16 single ended or 8-channel differential front-end analog inputs, as well as multiple multiplexing expansion boards. Expansion board utilizing AMXbus ™ The analog signal is routed from the multiplexer input to the ADC board, which also has built-in testing capabilities. The fault LED on the front-end panel can provide users with fault detection and isolation capabilities.

Core functions and parameters

Key Features

12 bit resolution, maximum conversion time of 9 μ s, acquisition time of 9 μ s (can be selected based on full-scale input voltage).

16 channel single ended multiplexer, 8-channel differential input option.

Onboard built-in testing logic for fault detection and isolation, equipped with front-end panel fault LED.

Onboard precision voltage source, supporting self check.

You can choose one ADC per slot or one ADC plus a slave MUX board.

It has overvoltage protection input, separate encoding/key controlled VME connector, dual European card appearance, and fault safety function in case of power failure.

Throughput

Analog to digital (A/D) throughput: The throughput time of the operation is the sum of the amplifier setup time (acquisition time) and the A/D conversion time. The A/D conversion time is 9 μ s, and the amplifier setup time depends on the input voltage range and gain setting.

System throughput: Supports multiple multiplexing expansion boards, and the total system throughput can be calculated according to the relevant formula, which is

F S= N(T 1+T 2+T 3)1（ Samples per second）， Where N is the number of channels, T1 is the acquisition time of the remote multiplexer, T2 is the setup time of the VMIVME-3100 amplifier, and T3 is the conversion time of the VMIVME-3100 ADC.

protection function

16 front-end analog inputs have overvoltage protection. When the+15V power supply is turned on, the maximum input voltage range is ± 35V; when the power supply is turned off, the maximum input voltage is+20V.

Operation Mode

Normal mode operation

Analog signals can be transmitted through the front panel P3 connector or AMXbus ™ (P2 connector) receiving, AMXbus ™ Supports multiple analog input multiplexing expansion boards.

The front-end panel input (P3 connector) supports 8 differential or 16 single ended analog inputs. In single ended mode, each input has a related ground signal, and multiple low-pass filter options are also available.

AMXbus ™ The operation supports connecting up to 16 VMIC multiplexer boards to one ADC, achieving high-density and low-cost analog input expansion, and also supports built-in testing functions related to VMIC analog output boards.

ADC conversion can be initiated through an external TTL compatible signal, and the external trigger conversion circuit is enabled by setting the bit in the control word.

Built in testing mode

The ADC board contains a Control Status Register (CSR), which can be used to select certain operating modes. Users can use the read and write capabilities of CSR to verify the DO-D14 function of VMIVME-3100 VMEbus logic.

On board 9 precision voltage sources (-10.000V, -7.500V, -5.000V, -2.500V, 0.000V,+2.500V,+5.000V,+7.500V,+10.000V) can be selected by the user testing subroutine to verify the correct operation and accuracy of the board, and can also be used for calibration.

Can be accessed through AMXbus ™ Interconnect VMIVME-3100, VMIVME-41XX, and VMIVME-32XX boards to perform loop testing from analog output to analog input. It can also be used in conjunction with VMIVME-4500 for fault detection and isolation.

VMEbus interface description

The VMEbus interface of VMIVME-3100 includes the logic required to connect the slave board to VMEbus and perform memory mapping in the VMEbus short I/O address space. In the write cycle of the board address, bits A01 to A15 are compared with the previously selected board address, which is selected by the DIP switch. If the address matches, a board selection signal is generated, which, together with the control signal received on the board, gates the data (DO to D15) to the CSR on VMIVME-3100.

The circuit requires+5V,+15V, and -15V voltages, with+5V provided to the board through P1 and P2 connectors. The onboard DC-DC converter generates+15V and -15V for the analog circuit

Programming related

Overview

The ADC board performs memory mapping in the VME short I/O address space, occupying only one word position within the 65535 byte VME short I/O address space. The board address is selected by DIP switches, and the short I/O space is mapped from FF0000 (hexadecimal) to FFFFF (hexadecimal). The ADC data register containing 12 bit converted digital data is a read-only register, while the control status register (CSR) is a read-write register used for board control. Since these two registers use the same address, CSR access and ADC conversion end register access are selected through data bit D15.

Description of Control Status Register (CSR)

The operating mode of the CSR programming selection board, CSR is a 16 bit read-write register. To initiate AD conversion, it is necessary to set data bit D6 in CSR and program data bits DO to D5 and D8 to D14 according to the desired operating mode. Data bit D15 is used to distinguish between two possible read cycles. Writing “0” to CSR can read the converted digital data from the ADC data register, while writing “1” can read CSR.

ADC board reads data format

To read 12 bit converted data, it is necessary to first write the low-level data bit D15 into CSR. The data is only valid when data bit D15 is read as logical ‘0’, and the valid data is included in data bits DO to D11.

Programming Example

Provides various MC68000 assembly language programming examples, including ADC conversion of P3 connector input and using AMXbus ™ Expansion of functions, testing and programming of ADC board, testing of analog output of VMIVME-4100 DAC board using ADC board, and verification of VMIVM-3200 multiplexer board in combination with VMIVME-4100 DAC board.

Configuration and Installation

Unboxing program

Some components are sensitive to electrostatic discharge, and unused boards should be stored in their original packaging. When placing the board on the workbench, it is recommended to insert conductive material underneath the board to provide conductive diversion. After receiving the goods, it is necessary to carefully inspect for any transportation damage. If there is any damage, a claim should be made to the carrier and a complete report should be sent to VMIC.

Physical installation

When installing or disassembling the board, the power should be turned off. Insert the board into the corresponding slot of the chassis, ensure correct alignment and orientation, and smoothly slide the card forward against the mating connector until it is firmly inserted.

Pre installation checklist

Before installation, it is necessary to confirm that the relevant theoretical and programming content has been read and applied. Check whether the jumper and board address switch settings installed by the factory meet the requirements, change the relevant settings as needed, confirm that the cable connection is correct, and calibrate by the factory. If recalibration is required, please refer to the relevant sections.

Board address selection switch

There are two address DIP switches on VMIVME-3100, each corresponding to an address bit or unused. When the switch is turned on, the corresponding address bit is compared with the logic “0”. During the reading and writing of the DAC board, all corresponding address bits must be compared with the switch position.

Other configurations

Address modifier response selection: The response method of the address modifier code on the board can be selected through jumper wires.

ADC output encoding selection: Factory configured for straight binary digital encoding with unipolar input and offset binary encoding with bipolar input, which can be changed to binary complement code through jumper wires.

Analog input full-scale range selection: Select the full-scale range to be digitized by the ADC through jumper (JC) and related gain resistor (R28).

RDELAY (optional) selection: The factory is configured with no RDELAY resistor, and a collection setup time of 9 μ s can be selected. Different RDELAY can be chosen as needed to obtain different collection times.

Connector Description

P1 and P2 connectors connect the VMIVME-3100 board to the VMEbus backplane. P1 contains address data and control lines, as well as all additional signals required for control data transmission and other bus functions. P2’s user I/O pins are provided by AMXbus ™ Used to control external multiplexing expansion boards and test analog output boards for VMIC.

The P3 connector is a Panduit 32 pin male connector that supports 16 single ended or 8-differential analog inputs, each with an associated analog ground pin.

calibration

There are four potentiometers adjusted on the VMIVME-3100, and the factory has correctly adjusted and applied anti loosening glue. If recalibration is required, the onboard precision benchmark needs to be calibrated first, and then used to recalibrate the ADC.

Maintenance and Warranty

maintenance

The maintenance section provides information on the maintenance and upkeep of VMIC products. If the product malfunctions, users should check the software, system configuration, electrical connections, etc. User level repairs are not recommended and should contact VMIC to obtain a Return Merchandise Authorization (RMA) number. The appendix contains drawings and charts for reference.

warranty

VMIC’s standard products are guaranteed to be free of material and process defects within 90 days from the date of shipment. For products that meet the warranty conditions, VMIC may choose to repair or replace them at its facilities. Customers are required to notify VMIC within a reasonable time after discovering defects. Prior to returning the product, they must contact the customer service department to obtain the call ticket number and RMA number. There are corresponding regulations on the transportation method and cost of the product. In some cases, VMIC does not assume warranty or liability, and the final determination of warranty eligibility is made by VMIC. The warranty period for replacement or repair products is the same as that of the original products.

Over warranty maintenance policy

VMIC’s maintenance policy for standard products is divided into two categories: product replacement and fixed price maintenance. All product repairs require return authorization, and repair pricing can be consulted with the factory representative. Payment should be made upon delivery or within 30 days after the delivery date selected by VMIC, and shipping costs should be borne by the customer (excluding warranty repairs). VMIC’s repaired products are guaranteed to be free of process and material defects for 90 days from the date of shipment to the customer, and repair rates may not apply to products that have suffered abnormal physical or electrical damage.

Product Overview

VMIVME-2540 is a 24 channel intelligent counter/controller that serves as a slave I/O module for VMEbus systems, providing high-precision digital measurement and function generation capabilities. It features a simple and consistent memory mapped user interface. It consists of three parts: a VMEbus slave DTB interface, a CPU with firmware and supporting logic, and a circuit for implementing measurement and control functions. It is equipped with a 15 MHz 68HC000 CPU, supports A32/A24/D32/D16/D8 (EO) VMEbus slave interfaces and a 64 Kbyte VMEbus memory window. The data exchange interface complies with ANSI/IEEE standard 754-1985 (32-bit floating-point operation).

Core functions and parameters

Measurement function

Event Count: Up to 4 billion events, with an input frequency range of up to 2.5 MHz. The counting range can reach 232 in long mode and 216 in word mode.

Frequency measurement: ranging from -1.16 × 10-3 Hz to 2.5 MHz; The maximum accuracy of a 16 bit counter is 0.015% between 0.007 and 76 Hz, and the error is 100 × (frequency/5 MHz) between 76 Hz and 2.5 MHz; The 16 bit enhanced resolution counter (requires two 16 bit counters) has a range of 0.001 Hz to 1.25 MHz.

Cycle/pulse width measurement: Supports 16 bit and 32-bit, discrete or continuous modes, with low data transmission latency. The range of a 16 bit counter is 131.07 s to 400 ns, and the range of a 16 bit enhanced resolution counter (requiring two 16 bit counters) is 858.9 s to 800 ns. In 32-bit integer operations, two 16 bit counters are required for pulse width measurement, and three 16 bit counters are required for cycle measurement.

Orthogonal position measurement: sine/cosine input range from DC to 1 MHz, 32-bit counter, supports limit/modulus check, accuracy is ± 1/4 wave (5 MHz sampling rate), each encoder requires two channels.

Generate function

Square wave/pulse sequence generation: frequency range from 0.0076 Hz to 2.5 MHz.

Timer/Periodic VMEbus Interrupter: Frequency range from 0.0076 to 1000 Hz.

Pulse sequence mode: can generate a sequence of N pulses, with programmable duty cycle.

Orthogonal position control output: ± 1/4 wave control resolution, up to 1.25 MHz step speed and ± 32767 steps/command.

Other functions

Event triggered timer delay: Generate VMEbus interrupt at most 131.1 seconds after input at the event edge, which can be triggered again.

24 control/measurement interfaces: including 24 clocks, 24 gates, and 24 outputs.

Supports RS-422 differential interface and single ended TTL input.

Options for configuring 4, 8, 16, and 24 interfaces.

System and Physical Specifications

System time base: 5 MHz, accuracy/stability of ± 0.005%.

Power requirements:+5 V ± 5/-2.5%, typical 4.25 A, maximum 5 A.

Temperature range: Operating temperature from 0 to 65 ° C, non operating temperature from -40 to 85 ° C, humidity from 5 to 95% RH without condensation.

VMEbus compatibility: Complies with ANSI/IEEE 1014-1987, IEC 821 and 297, supports A32/D32 DTB slaves, base address can be selected on a 64 Kbyte boundary, supports monitoring/non privileged address modification codes, dual interrupt module can assert any one of IRQ1 to IRQ7, board size 160 × 233.4 mm.

Input/output buffer specifications

Input buffer

Common mode voltage limit: ± 25 V.

Differential mode voltage limit: ± 5 V (due to 1/4 W, 120 Ω terminal resistance).

Differential mode V IH/V IL: Compliant with RS-422 standard, V IH refers to the main (positive) input voltage being 100 mV higher than the differential (negative) input voltage within the ± 25 V common mode voltage range; V IL refers to the main (positive) input voltage being 100 mV lower than the differential (negative) input voltage within the ± 25 V common mode voltage range.

Single pole (single ended) mode V IH/V IL: V IH=V TTL+100mV, V IL=V TTL − 100mV.

Input lag: 50 mV.

Suggested input rise time: minimum 5 ns, typical propagation delay 25 ns, maximum 1 ms.

Output buffer

AM26LS31 is used.

Short circuit current: Typical I SC=-60mA.

Differential output voltage: minimum ∣ V t ∣=2V.

Interface and Connection

Discrete wire connectors and terminal blocks: It is recommended to use connector components from Harting Elektronik, Inc., such as 96 pin discrete wire connectors (model 0903-096-3214).

RS-422 differential signal: Twisted pair insulated wire (24 AWG solid or multi stranded copper conductor) should be used,

R<30Ω/1000

ft）， The maximum cable length is 4000 feet, and it is necessary to ensure that each signal group is properly grounded.

TTL signal: 96 conductor flat ribbon cable (30 AWG insulated copper multi strand conductor) can be used, corresponding to ERNI 913.031 or similar 96 pin DIN female connector. It is recommended that the total cable length not exceed 50 feet.

If the front panel I/O signal needs to be led out to the terminal block, it is recommended to use VMIAC-BT04 dual 96 pin transition panel and connect it through a 96 conductor ribbon cable (recommended to be 3 feet long).

Application field

Including rotary axis instruments (angular position, velocity, acceleration), automotive industry testing (brakes, transmissions, tachometers), robotics, telescopes/observatories, medical/laboratory instruments, linear position measurement (distance, velocity, acceleration), elevators, bridge cranes, X-Y workbenches, machine tools, automatic storage and retrieval, etc.

Product Overview

Basic introduction: VMIVME-2511 is a programmable I/O board compatible with VMEbus. It uses two Motorola MC68230 parallel interface/timer chips and one Motorola MC68153 bus interrupt module, with multiple functions and features.

Key Features

48 bit I/O (including bit I/O, unidirectional 8-bit and 16 bit, bidirectional 8-bit and 16 bit).

Interrupt generation logic, supporting four interrupt sources, each MC68230 has one timer interrupt and one port interrupt.

Optional high current driver with a current filling capacity of up to 64mA.

Two 24 bit programmable timers, supporting software programmable timer mode.

Optional handshake timer that can be connected to various low-speed, medium speed, or high-speed peripherals or other computer systems.

Equipped with Centronics parallel interface.

Physical description and specifications

Physical description: Composed of VMEbus compatible logic, interrupt control logic, and I/O control logic related to parallel interface/timer modules. VMEbus compatible logic includes address decoding logic and data transmission control logic, supporting VMEbus read and write data transmission; The interrupt control logic utilizes Motorola MC68153 BIM to allow port and timer interrupts from each parallel interface/timer; The parallel I/O port is programmable and supports multiple modes. The high current driver option can provide up to 64mA of surge current capability, but does not support bidirectional mode. If the bit I/O mode is selected, all A port data bits must be programmed in the same direction.

Features

Compatibility: Complies with VMEbus specifications and adopts dual height external dimensions.

I/O connector type: 64 pin connector (DIN 41612).

I/O organization: Utilizing two Motorola MC68230 parallel interfaces/timers, providing multiple programmable I/O functions, buffered I/O options have driver capability limitations and do not support bidirectional mode.

Addressing scheme: An 8-bit DIP switch provides board address, and the factory default configuration is to respond to short monitoring I/O access. Users can change it to short non privileged I/O access through jumper wires.

Data polarity: can be ordered as high or low validity.

Electrical specifications: Provide parameters such as output high voltage, output low voltage, input high voltage, input low voltage, output high current, and output low current for both without and with I/O buffer.

Physical specifications

Environment: Operating temperature from 0 to 55 ° C, storage temperature from -20 to 85 ° C; relative humidity from 20% to 80%, no condensation; The cooling method is convective cooling.

Power requirement:+5V, maximum 2.5A.

Ordering information: The ordering model of VMIVME-2511 includes multiple options, including key, output options, input options, data transmission, I/O options, output resistance options, input voltage, output type, input type, etc. The input and output polarity options must be the same, and compatible connectors, strain eliminators, and PC board connectors are also provided.

Operating principle

Block diagram: VMIVME-2511 consists of 10 main subsystems, each with a detailed block diagram, including address decoding subsystem, parallel interface/timer and I/O port control logic, VMEbus interrupt subsystem, etc.

Operation Overview: Two MC68230 modules are respectively associated with P3 and P4 connectors. I/O data transmission is achieved by selecting registers on the required P/I/T modules, interrupt processing is implemented by programming the selected P/I/T modules, and the corresponding channels in 68153 BIM are enabled to enable specific interrupt sources to be responded to by the system processor. Some jumper selections vary depending on the port channel function of the P/I/T module.

I/O data transfer description: I/O transfer is performed through P3 and P4 connectors, with the help of port registers on the required P/I/T module. When equipped with optional buffers, I/O operations are a subset of the P/I/T module functionality, which limits programmability but enhances driving capability.

Interrupt capability: capable of handling four interrupt requests, with each P/I/T module supporting two requests (port interrupt request and timer interrupt request)

Main features of the product

The direction of each 8-bit port can be individually programmed.

Capable of injecting 64mA current.

The control register and data register use independent board address decoding.

Built in testing (BIT) logic for fault detection and isolation.

Equipped with fault LED indicator light.

Compatible with VMIC’s intelligent I/O controller product line.

Adopting high reliability DIN type I/O connectors.

Supports 8-bit, 16 bit, and 32-bit data transmission.

Optional open electrode output.

Functional characteristics

Compatibility: Complies with VMEbus specifications and adopts dual height external dimensions.

I/O connector type: Dual 64 pin DIN connector.

I/O organization: 8 I/O ports, each 8 bits wide, addressable to any address within a short monitoring or short non privileged I/O mapping.

Addressing scheme: 8 ports can be individually addressed on 8-bit or 16 bit boundaries, and address DIP switches provide unlimited short data I/O address mapping options.

Built in testing: Output data can be read back in real-time or in offline mode. Offline mode is enabled by writing to the control and status register (CSR) to set the test mode bit. When the test mode is enabled, all outputs are in three states, providing two test mode bits. If necessary, each connector’s I/O (32-bit) can be independently tested.

Fault LED: It lights up during power startup and system reset, and can be turned off after successful diagnosis under program control.

I/O circuit: The transceiver supports high current input (64mA) output, and the logic level TTL I/O option uses the SN74AS645 octal bus transceiver. The open collector electrode option uses the SN74AS641 transceiver. If the open collector electrode option is ordered, all 64 bits are only output.

Product model: There are multiple models of this product, with 2510 being the original design (one test mode bit); 2510A has two test mode bits (one for each connector); 2510B is recommended for new designs (two test mode bits).

Ordering Options

A (input/output type and data polarity): 1 is TTL logic level input and output, positive logic; 2 is TTL logic level input and output, negative logic; 3 is an open electrode output (no input), positive logic; 4 is an open electrode output (no input) with negative logic.

B (output resistance): 0 is an uninstalled resistor; 1 is 2.2k Ω (open collector electrode input/output must be selected).

C. D and E: 0 are unused.

Connector data

Compatible cable connector: Panduit No. 120-964-435E.

Strain eliminator: Panduit No. 100-000-032.

PC board header connector: Panduit No. 120-964-033A.

Physical/Environmental Characteristics

Temperature range: Operating temperature from 0 to 55 ° C, storage temperature from -20 to 85 ° C.

Relative humidity range: 20% to 80%, no condensation.

Cooling method: convective cooling.

Power requirement:+5V, maximum 3.786A.

Positive/negative logic ordering information

TTL I/O: The positive logic input option presents a high-level input voltage on each data line corresponding to logic 1 on VMEbus; The positive logic output option presents logic 1 to the output data register (ODR), presenting a high-level output voltage on each data line. The negative logic input option presents a high-level input voltage on each data line corresponding to logic 0 on VMEbus; The negative logic output option presents a logic 0 to the output data register and a high-level output voltage on each data line.

Open collector electrode output option: The positive logic output option presents logic 1 to the ODR (the corresponding bit on VMEbus is logic 1), causing the output open collector electrode transistor to conduct and provide grounding for the load; The negative logic output option presents logic 0 to the ODR (with the corresponding bit on VMEbus being logic 1), causing the open collector electrode output transistor to turn off.

IIOC compatibility

This product is compatible with VMIC’s Intelligent I/O Controller (IIOC) series and is suitable for fields such as data acquisition, process control, factory automation, as well as simulation and training markets. The IIOC software supports the I/O of this product, allowing users to load the direction of I/O on each connector offline. Therefore, IIOC does not support separate port control, and its support is limited to VMIVME-2510A or -2510B models. IIOC is a multiprocessor controller that includes a CPU, global memory, various optional host interfaces, and firmware, providing a complete I/O solution.

Product Overview

Basic function: VMIVME-2128 can provide 128 channels of high voltage and/or high current surge current output. Its open collector electrode output driver supports output voltages from 5 to 48VDC and has built-in test (BIT) logic, allowing users to verify the operation of each channel under software control.

Key Features

128 channel high-voltage digital output (5 to 48VDC), supporting 8-bit, 16 bit, or 32-bit VME data transmission.

High current open collector electrode driver (600mA current) with built-in suppression diode, output can be connected in parallel for higher driving capability, optional open collector electrode pull-up resistor.

The output has fault protection function (when the current exceeds 1.0A, the output is turned off), built-in testing logic, and a software controlled fault LED on the front panel (for built-in testing).

Users can configure address jumpers to allow for continuous addressing of multiple boards when used in a VME system.

Application scenarios: Suitable for various applications such as relay drive, lamp drive, solenoid drive, hammer drive, stepper motor drive, LED drive, high current and high voltage drive, fiber optic LED drive, etc.

Security Summary

To minimize the risk of electric shock, the chassis and system cabinets must be connected to electrical grounding, using three core AC power cords, and correctly connected to grounded sockets.

Do not operate the system in an explosive atmosphere to avoid potential safety hazards.

Operators are not allowed to remove the product casing. Component replacement and internal adjustment must be carried out by qualified maintenance personnel. When replacing components, do not connect the power cord. Even if the power cord is removed, there may still be dangerous voltage in some cases. Before contacting the circuit, the power supply must be disconnected and discharged.

Do not perform internal repairs or adjustments alone, personnel who can provide first aid and resuscitation must be present.

Do not replace components or modify the system to avoid introducing additional hazards. Product repairs should be returned to the GE Fanuc embedded system to ensure that safety functions are maintained.

Dangerous program warning: There will be a warning in the manual before potential dangerous programs, and the instructions in the warning must be followed.

Safety symbols

STOP: Inform the operator not to perform a certain operation, as it may result in personal injury or partial or complete damage to the system.

Warning: Indicates the presence of danger and reminds attention to a certain procedure, operation, or condition. Improper execution or compliance may result in personal injury or death.

CAUTION: Indicates the presence of danger and reminds attention to a certain operating procedure, operation, or condition. Improper execution or compliance may result in partial or complete damage to the system.

NOTE: Remind attention to an important program, operation, or condition.

Operating principle

Functional modules: The design of the VMIVME-2128 board mainly consists of four parts: VME basic logic, device addressing, output drivers, and built-in test logic. It supports eight 16 bit bidirectional registers, one control and status register (CSR), high-performance output drivers, typical VME basic logic, and device address jumper groups, which allow users to select the base address.

Device Addressing: Supports data transfer in short or standard I/O memory space, with monitoring and/or non privileged data access capabilities. The I/O access type is selected through jumper wires, and the factory defaults to responding to short monitoring I/O access.

VME basic logic: composed of drivers, receivers, and control logic, the DTACK generator is designed to provide high data transmission rates.

Data transmission: The data transmission transceiver supports read and write operations on 8-bit, 16 bit, and 32-bit boundaries.

Register control logic: Supports read and write operations on eight 16 bit bidirectional dual port latches, as well as read operations on CSR registers that control test modes and front panel LEDs. The 128 bit high voltage output can be addressed as four 32-bit long words, eight 16 bit words, or sixteen 8-bit bytes.

Built in testing (BIT): By enabling the test mode bit in CSR, test data can be written to any output data register (ODR) in test mode and read back during read operations. At this time, all drives are turned off (tri state), and ODR can be read independently of the test mode bit at any time. This function provides real-time loopback testing (when the output driver is connected) and offline diagnostic testing (when the output driver is disconnected from the field device) capabilities. The front panel has a fault LED for quick fault isolation to the board level. The fault LED lights up when powered on or the system is reset, and the user can turn it off after successful diagnosis.

Output driver: Equipped with thermal and surge current shutdown protection, surge current protection allows up to 990mA of surge current before the driver shuts down. If the surge current of each channel in the external circuit exceeds the 990mA limit, preheating resistors should be used. SIP resistor sockets are provided on the board for these preheating resistors, which must be of bus type, with pin 1 as the common terminal and pin 1 of the socket grounded. The power rating of the SIP resistor should be sufficient to handle the required power consumption. The output driver user load return current must provide the lowest possible resistance return path to the user voltage source, and must not be returned through VME backplane digital ground. It must be returned to the user power supply through the B-row pins of the front panel connectors P3 and P4, or through pins A1 to A26 of the P2 connector if the P2 user ground option is ordered. If the user’s grounding quality is poor, causing the user’s load to return current to the digital grounding of the backplane, fuse F1 will melt and make the board unable to work. A blown fuse usually indicates poor grounding quality for the user, and this fuse circuit is necessary for the digital input grounding return of the control signal to the output driver.

P2 user grounding option: The user grounding is connected to all B-row pins of the front panel connectors P3 and P4. If the P2 user grounding option is ordered, these grounds are also routed to pins A1 to A26 of the backplane P2 connector through the installation of short-circuit bars SB1 to SB4 (RP33 to 36). The external power supply grounding (user grounding) can now be accessed from the P2 backplane connector of the VME chassis. All 26 wires are required to provide a low resistance user load current return path. For a typical 300mA/channel load, the current of each wire can reach up to 1.48A. Each unused wire means that its current must be shared by the remaining wires, so 28 AWG or larger wires should be used.

Configuration and Installation

Unpacking procedure: Some components on GE Fanuc embedded system products may be sensitive to electrostatic discharge. When placing the board on a workbench for configuration and other operations, it is recommended to insert conductive material underneath the board to provide conductive diversion. Unused boards should be stored in their original packaging. After receiving the product, all precautions in the transport container should be followed, all items should be carefully unpacked, and a thorough inspection should be conducted for any transport damage. All claims arising from transport damage should be made to the carrier and a complete report should be sent to the GE Fanuc embedded system, requesting advice on the handling of damaged items.

Jumper and switch positions: Introduces the physical positions on the jumper, and the address modifier can change the configuration by installing the jumper at the appropriate position on connector H1, supporting multiple I/O access types. The address selection jumper is used to specify the starting board address for data transmission. The installed jumper is equal to zero, and the omitted jumper is equal to one. The factory default configuration is to respond to 0000 HEX in the short monitoring space.

I/O cable and front panel connector configuration: The output connectors (P3 and P4) on VMIVME-2128 are 96 pin DIN standard and can be used with various cables and matching connectors. Users can refer to the relevant application guide for more information. Detailed explanation of the use of user I/O pins and external voltage input for connector P2, as well as the pin configuration of output connectors for P3 and P4. The VMIVME-2128 board is designed with a high-quality ground plane, which is connected to the VME ground through fuse F1 and to the B-row pins on connectors P3 and P4 to enhance noise resistance and improve operational reliability. Users are also reminded that the grounding conductor should be connected to the power supply (GND return) associated with these signal loads, and the grounding connection should prevent excessive current (DC or noise) from flowing through the VME backplane. External user voltage should not be applied to VMIVME-2128 without connecting the VME backplane+5VDC. If these voltages cannot be applied and removed together, the preferred order is: user voltage is connected last and disconnected first.

Optional user grounding: If the user grounding option is ordered, the output return is routed to pins A1 to A26 of P2 through the installation of short-circuit bars SB1 to SB4, allowing access to the external power supply grounding from the P2 backplane of the VME chassis. It is important to maintain the grounding path resistance lower than the VME grounding path resistance and use as many wires as possible to lead out these grounding points. The current in the wires may be large, so 28 AWG or larger wires should be used, while being careful not to exceed the maximum current rating of the connector pins.

Preheating resistor: When the incandescent lamp is initially turned on, the cold filament resistor is the smallest, usually allowing 10 to 12 times the surge current. A surge current of 1A or greater will force the output driver to enter the return current limit. To avoid this problem, preheating or current limiting resistors should be used in the lamp circuit. The preheating resistor should consume about 10% of the rated (hot) current of the bulb. A ten pin SIP socket is provided on the board for preheating resistors, which must be bus type, with pin 1 as the common terminal and pin 1 of the socket grounded. The power rating of the preheating resistor should be sufficient to handle the required power consumption.

Programming

Register Mapping: VMIVME-2128 includes a 16 bit board ID register, a 16 bit CSR, and eight 16 bit ODRs, providing register address mapping. ODRs allow control of 128 high-voltage digital output channels, which can be addressed as four 32-bit long words, eight 16 bit words, or sixteen 8-bit bytes. ODRs can be read under program control for data verification or diagnostic testing. CSR and board ID can be addressed as 16 bit words or two 8-bit bytes, and ID and CSR bit mappings as well as ODR bit mappings are provided. The board uses a 32 byte address space.

Detailed programming: In output data transmission, the data register address mapping displays the correspondence between ODR (DR0 to DR7) and output data channels 127 to 0. The built-in testing function provides real-time loopback data verification and offline diagnostic execution capability. The offline built-in testing function is activated by setting the test mode (TM) bit in CSR to logic “zero”. When the TM bit is set, all output drivers are in three states, and test data can be written into the selected data register and read back during read transmission without affecting the user device. When the test mode is turned off, the data can also be read back, allowing online testing of the board. The test mode bit and fault LED control bit are initialized to active state when powered on or system reset, so the fault LED lights up and the output driver is disabled. A simplified programming flowchart is also provided.

Maintenance

When a product malfunctions, it is necessary to first check the software, system configuration, electrical connections, jumper or configuration options, whether the board is fully inserted into its correct connector position, whether the connector pins are clean and free of contaminants, whether there are components or adjacent boards disturbed when inserting or removing the board from the chassis, and the quality of cables and I/O connections.

If you need to return the item, you need to contact GE Fanuc Embedded System to obtain a Return Merchandise Authorization (RMA) number, which can be obtained via email. Customer service can also be contacted by phone or email.

User level maintenance is not recommended, and the drawings and charts in the manual are for reference only.