ProSoft MVI56‑MCM ControlLogix Modbus Communication Module

ProSoft MVI56‑MCM is a Modbus communication gateway module for Rockwell ControlLogix 1756 platform. It acts as protocol bridge between ControlLogix PLC and Modbus RTU/ASCII field devices, supporting each serial port configurable as Modbus master or slave, realizing real‑time bidirectional data exchange via ControlLogix backplane bus.

This single‑slot module provides two DB9 serial interfaces supporting RS232/RS422/RS485, baud rate up to 115200bps. It adopts shared internal database for data mapping, widely used as spare replacement parts for manufacturing, petrochemical and power plant PLC cabinet maintenance and legacy‑device retrofit projects.

Main Specifications

• Brand: ProSoft Technology
• Model: MVI56‑MCM
• Product Type: Modbus Master/Slave Communication Gateway Module
• Applicable Chassis: Rockwell ControlLogix 1756 series rack
• Supported Protocol: Modbus RTU, Modbus ASCII
• Serial Interfaces: Dual DB9, RS‑232 / RS‑422 / RS‑485 selectable
• Baud Rate: 110 bps ~ 115200 bps
• Installation: Single‑slot plug‑in for ControlLogix backplane
• Certification: UL, CE industrial compliance certification
• Operating Temperature Range:‑20°C ~ +60°C

Core Functions

• Each serial port can be independently set as Modbus master or slave station mode
• Complete bidirectional data mapping between Modbus network and ControlLogix controller tags
• Support master station polling multiple Modbus slave instruments, sensors and drives on site
• Work as Modbus slave to accept read‑write requests from upper‑level Modbus host system
• Front‑panel LED indicators display module status, serial communication and fault alarm information
• Configure module parameters and database mapping via ProSoft configuration software and AOI instruction blocks
• Transmit mass process data through ControlLogix rack backplane with high‑speed data interaction
• Built‑in hardware self‑diagnosis detects serial bus abnormality and module hardware failure
• Single‑slot compact structure for convenient installation and on‑site spare‑part replacement during maintenance
• Provide stable Modbus protocol conversion solution for heterogeneous‑device integration automation hardware station

Application Scenarios

• Manufacturing automation ControlLogix PLC docking Modbus field instruments and drives projects
• Petrochemical plant process control system Modbus‑protocol device data‑acquisition scenarios
• Power plant auxiliary‑equipment PLC cabinet connecting legacy Modbus‑RTU instruments
• Metallurgy industry production‑line multi‑brand equipment interconnection and data‑interaction projects
• Industrial renovation projects, communication‑module replacement and old‑equipment system upgrade
• Legacy ControlLogix rack maintenance and spare‑parts backup for aged industrial facilities
• ProSoft Modbus gateway spare‑parts inventory and on‑site PLC cabinet maintenance supporting projects