Allen-Bradley MVI56-MCM

The MVI56-MCM is a Modbus Communication module by Prosoft Technology. It belongs to the ControlLogix Platform and allows Rockwell ControlLogix processors to interface with other Modbus protocol compatible devices. The MVI56-MCM has an operating temperature that ranges between 0 and 60 degrees Celsius (32 to 140 degrees Fahrenheit) and a storage temperature between -40 and 85 degrees Celsius (-40 to 185 degrees Fahrenheit). Shock ratings for the MVI56-MCM include 30G (operational) and 50G (non-operational), with vibration being 5G from 10 to 150 Hertz. The module has a relative humidity rating that ranges between 5% and 95% (non-condensing). Included with the MVI56-MCM are LED indicators for Module Status, Backplane Transfer Status, Application Status, and Serial Activity. Electrical ratings for the MVI56-MCM include a backplane current load of 800 milliamperes at 5.1 Volts DC and 3 milliamperes at 24 Volts DC, as well as a requirement that all phase conductor sizes need to be 1.3 millimeters (squared) at a minimum, and all earth ground conductors need to be at least 4 millimeters (squared). Agency certifications for the MVI56-MCM include RoHS, CE, ATEX, c-UL-us, CB Safety, GOST-R, and CSA.

General specifications for the MVI56-MCM include a baud rate of 110 to 115K baud, stop bits of 1 or 2, data size of 7 or 8 bits, parity options of none, even, and odd, and RTS timing delays between 0 and 65535 milliseconds. Modbus modes for the MVI56-MCM include RTU mode (binary) with CRC-16 and ASCII mode with LRC error checking. Floating point data movement is supported on the MVI56-MCM; including configurable support for Enron, Daniel, and other implementations. Functional specifications include a command list with up to 100 commands per master port (each fully configurable for function, slave address, register to/from addressing, and word/bit count), a polling command list (configurable polling of command list, including continuous and on change of data, and dynamically user or automatic enabled), and status data (error codes available on an individual command basis).