Allen-Bradley MVI56-MCM ControlLogix Modbus Communication Module

Overview

The Allen-Bradley MVI56-MCM is a Modbus communication module engineered for integration within the ControlLogix platform. It enables seamless data exchange between ControlLogix processors and Modbus-compatible devices, supporting both Modbus RTU and Modbus TCP/IP networks. Designed for reliability and high-performance control applications, the MVI56-MCM provides a robust interface for connecting PLCs to third-party field instruments and control systems.

Technical Specifications

• Model / Part Number: MVI56-MCM

• Brand: Allen-Bradley

• Product Type: Modbus Communication Module

• Product Line: ControlLogix

• Weight: 1.69 lbs (0.77 kg)

• Backplane Power Consumption: 800 mA @ 5 VDC

• Supported Communication Protocols: Modbus RTU Master/Slave, Modbus TCP/IP

• Supported Serial Standards: RS-232, RS-422, RS-485

• Environmental Rating: Class I, Division 2, Groups A, B, C, and D (Hazardous Locations)

• RAM Requirement: Minimum 128 MB, Recommended 256 MB

• Operating Temperature: 32°F to 140°F (0°C to 60°C)

• Required Disk Space (for configuration tools): Minimum 100 MB

• Configuration Software: ProSoft Configuration Builder (PCB)

• Mounting Type: ControlLogix chassis-mounted

• Status Indicators: Module, Communication, and Network activity LEDs

• Module Function: Acts as a communication bridge between Logix controllers and Modbus networks

Key Features

• Dual Modbus ports for simultaneous master and slave operations

• Compatible with standard ControlLogix backplanes

• Simplified configuration through ProSoft software tools

• Built for use in hazardous and industrial environments

• Reliable real-time communication for Modbus-based control systems

Applications

• Integration of legacy Modbus devices with modern ControlLogix PLCs

• Industrial automation systems in oil and gas, power generation, and manufacturing

• Supervisory control and data acquisition (SCADA) networks requiring Modbus communication

FAQs

Q1: Which communication modes does the MVI56-MCM support?
It supports both Modbus RTU and Modbus TCP/IP protocols, allowing flexible network integration.

Q2: Can it be installed in hazardous locations?
Yes. It is certified for Class I, Division 2, Groups A, B, C, and D environments.

Q3: What software is required for configuration?
The module is configured using ProSoft Configuration Builder (PCB), available from ProSoft Technology.