The ProSoft MVI56-MCM is a high-performance Modbus Master/Slave communication module specifically designed for the Rockwell Automation ControlLogix platform. This module provides seamless integration for serial devices into the ControlLogix backplane, enabling reliable communication via RS-232, RS-485, or RS-422 interfaces. It serves as a bridge for legacy equipment and specialized industrial sensors, supporting both Modbus RTU and ASCII protocols.
| Product Model | MVI56-MCM |
| Backplane Current Load | 800 mA @ 5 VDC / 3 mA @ 24 VDC |
| Operating Temperature | 0 to 60 degC (32 to 140 degF) |
| Storage Temperature | -40 to 85 degC (-40 to 185 degF) |
| Data Format | 7-8 data bits, 1-2 stop bits, parity (none, odd, even) |
| Isolation | 500 V optical isolation |
| Protocol Support | Modbus RTU (binary) and ASCII |
| Weight | 0.25 kg |
The MCM version uses a larger I/O image (250 input/248 output words) and is typically preferred for local chassis use. The MCMR version uses a smaller I/O image (42 input/42 output words), making it better suited for remote racks over ControlNet to reduce bandwidth consumption.
While each port's standard command list supports up to 100 entries, you can utilize Event Command control blocks to trigger additional Modbus commands directly from your PLC ladder logic.
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