Prosoft MVI94-MCM-MHI Modbus Master/Slave Communication Module

Product Overview

The ProSoft MVI94-MCM-MHI is a Modbus Master/Slave Communication Module designed for the Allen-Bradley FLEX I/O platform, specifically optimized for Mitsubishi Heavy Industries (MHI) equipment integration. It enables FLEX I/O controllers to communicate seamlessly with MHI PLCs, HVAC controllers, and other Modbus-compatible MHI devices. The module features dual-channel isolated design with RS-232/RS-485 interfaces and intelligent protocol conversion for automatic MHI communication standard recognition.

Key Technical Specifications

• Product Type: Modbus Master/Slave Communication Module for FLEX I/O
• Series: ProSoft MVI94
• Platform: Allen-Bradley FLEX I/O (1794 series)
• Target Equipment: Mitsubishi Heavy Industries (MHI) devices
• Communication Protocol: Modbus RTU/ASCII
• Interface Type: RS-232/RS-485 dual-channel
• Baud Rate: 300 to 115,200 bps
• Operating Voltage: 24 VDC ±10%
• Isolation Voltage: 1500 Vrms
• Operating Temperature: -40°C to +70°C
• Installation: FLEX I/O backplane mount
• Data Capacity: Up to 5,000 registers
• Command Capacity: 100 command inputs
• Certifications: CE, UL, ATEX
• Origin: USA

Key Features

• MHI-Optimized Protocol: Intelligent recognition of MHI PLC/HVAC controller communication standards
• Dual-Channel Isolation: 1500 Vrms isolation for noise immunity
• Flexible Master/Slave: Configurable as Modbus master or slave
• High-Speed Communication: Up to 115.2 kbps
• Large Data Handling: 5,000 registers for complex industrial scenarios
• Wide Temperature Range: -40°C to +70°C for harsh environments
• FLEX I/O Integration: Seamless integration with 1794 series backplane

Applications

• MHI PLC integration with Allen-Bradley FLEX I/O
• MHI HVAC system communication
• MHI machine and equipment connectivity
• Factory automation with mixed vendor systems
• Process control with MHI instruments

Installation Guide

1. Install in FLEX I/O 1794 backplane
2. Connect 24 VDC power supply
3. Wire RS-232/RS-485 communication cables to MHI devices
4. Configure Modbus parameters (baud rate, parity, station address)
5. Set master/slave mode per application
6. Map MHI device data to FLEX I/O tags

FAQ

Q: What does MHI stand for?
A: Mitsubishi Heavy Industries — the module is optimized for MHI equipment communication.

Q: Is this module compatible with standard Modbus devices?
A: Yes, it supports standard Modbus RTU/ASCII while providing enhanced compatibility with MHI-specific implementations.

Q: What is the maximum number of registers?
A: 5,000 registers for data storage and transmission.

Model Selection Tips

• MVI94-MCM-MHI = FLEX I/O Modbus module optimized for MHI equipment
• For standard FLEX I/O Modbus without MHI optimization, consider MVI94-MCM
• For ControlLogix platform, use MVI56-MCM or MVI56E-MCM
• For CompactLogix, use MVI69E-MBS
• Verify FLEX I/O backplane slot and power availability