MVI56E-MCMR

Overview of Allen-Bradley MVI56E-MCMR Enhanced Modbus Master/Slave Communication Module

The Allen-Bradley MVI56E-MCMR is an enhanced Modbus Master/Slave communications interface module designed for seamless integration with ControlLogix processors. It supports Modbus RTU/ASCII serial communication and Modbus TCP/IP Ethernet communication, enabling ControlLogix systems to easily interface with a wide variety of Modbus devices. This module provides efficient data handling with reduced Input/Output data blocks, making it ideal for remote rack applications and ControlNet networks.

Key Features of MVI56E-MCMR

• Supports Modbus RTU/ASCII over serial and Modbus TCP over Ethernet protocols.
• Two independently configurable serial ports supporting RS-232/RS-485/RS-422 standards.
• One Ethernet port (10/100Base-T) for high-speed Modbus TCP communication.
• Utilizes reduced I/O data block to minimize backplane and network bandwidth usage.
• Supports up to 32,000 Modbus data points, configurable for both read and write operations.
• Configurable as Modbus Master or Slave on each port.
• Includes a 4-character alphanumeric LED display for status and diagnostic information.
• Compatible with RSLogix 5000 and Studio 5000 programming software.
• Operating temperature range: 0°C to 60°C (32°F to 140°F).
• Backplane current consumption: 800 mA at 5 V DC and 3 mA at 24 V DC.
• Supports CIPconnect for remote configuration and diagnostics.

Technical Specifications

Applications / Use Cases

The MVI56E-MCMR is widely used in manufacturing, process control, energy, and packaging industries to integrate Modbus RTU/ASCII and TCP/IP devices with ControlLogix controllers. It provides a flexible, scalable communications solution that enables bi-directional data exchange while minimizing network traffic and system overhead.