Prosoft MVI56-MCM Modbus Master/Slave Communication Module

Product Overview

The ProSoft MVI56-MCM is a Modbus Master/Slave Communication Module designed specifically for the Rockwell Automation ControlLogix platform. It enables ControlLogix processors to communicate with Modbus RTU/ASCII devices as either a master or slave. The MVI56-MCM acts as an input/output module on the ControlLogix backplane, making Modbus data appear as I/O data to the processor, simplifying integration and reducing programming complexity.

Key Technical Specifications

• Product Type: Modbus Master/Slave Communication Module
• Series: ProSoft MVI56
• Platform: Allen-Bradley ControlLogix
• Serial Ports: 2 × RJ45 (RS-232/RS-485)
• Protocol Support: Modbus RTU, Modbus ASCII
• Port Configuration: Each port configurable as Master or Slave
• Data Capacity: 10,000 16-bit registers
• Backplane Power: 800 mA @ 5V DC
• Operating Temperature: 32°F to 140°F (0°C to 60°C)
• Storage Temperature: -40°F to 185°F (-40°C to 85°C)
• RAM Requirement: 128 MB minimum, 256 MB recommended
• Hard Disk Space: 100 MB minimum
• Safe Environments: Class 1, Division 2, Groups A, B, C, D
• Certifications: CE, UL, cUL, RoHS
• Origin: USA

Key Features

• Dual Serial Ports: Two independent RJ45 serial ports
• Master/Slave Flexibility: Each port independently configurable
• Large Data Database: 10,000-word internal database
• Seamless Integration: Modbus data appears as I/O to ControlLogix processor
• Easy Configuration: RSLogix 5000/Studio 5000 configuration with AOI
• Comprehensive Diagnostics: LED indicators for module, backplane, and serial status
• Sample Ladder Logic: Included with user-defined data types and annotations

Applications

• Manufacturing: automotive, food processing, packaging
• Energy: power generation, oil & gas
• Water/wastewater treatment
• Process control integration

Installation Guide

1. Install in single 1756 ControlLogix slot
2. Connect serial devices to RJ45 ports
3. Configure port parameters in Studio 5000
4. Import Add-On Instruction
5. Map Modbus data to controller tags
6. Verify communication via status LEDs

FAQ

Q: What is the difference between MVI56-MCM and MVI56E-MCM?
A: MVI56E-MCM is the enhanced version with more powerful processor, larger memory, and improved diagnostics. MVI56-MCM is the original version.

Q: Does it support floating-point data?
A: Yes, supports Enron and Daniel floating-point formats.

Model Selection Tips

• MVI56-MCM = Standard Modbus module for ControlLogix
• For enhanced version, use MVI56E-MCM
• For extended temperature, use MVI56E-MCMXT
• For remote rack optimization, use MVI56-MCMR