MVI56-MCM | Modbus Master/Slave Communication Module

Product Model **MVI56-MCM**
Manufacturer ProSoft Technology
Product Type Modbus Master/Slave Communication Module
Compatibility Allen-Bradley ControlLogix (1756 chassis)
Protocol Support Modbus RTU, Modbus TCP
Communication Ports 1x RS-232/485 (isolated), 1x 10/100 Ethernet
Baud Rate 300–115.2 kbps (serial), 10/100 Mbps (Ethernet)
Power Supply 5 VDC via ControlLogix backplane (1.5 A typical)
Operating Temperature -40°C to +70°C
Certifications UL, CE, RoHS, Class I Div 2
Dimensions 135 x 45 x 120 mm (single-slot ControlLogix module)
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Description

Technical Specifications

Product Model **MVI56-MCM**
Manufacturer ProSoft Technology
Product Type Modbus Master/Slave Communication Module
Compatibility Allen-Bradley ControlLogix (1756 chassis)
Protocol Support Modbus RTU, Modbus TCP
Communication Ports 1x RS-232/485 (isolated), 1x 10/100 Ethernet
Baud Rate 300–115.2 kbps (serial), 10/100 Mbps (Ethernet)
Power Supply 5 VDC via ControlLogix backplane (1.5 A typical)
Operating Temperature -40°C to +70°C
Certifications UL, CE, RoHS, Class I Div 2
Dimensions 135 x 45 x 120 mm (single-slot ControlLogix module)

Key Features and Advantages

The **MVI56-MCM** enables seamless integration of ControlLogix PLCs with Modbus networks. Its dual-interface design supports simultaneous operation as a Modbus TCP master and RTU slave. Built-in galvanic isolation (2,500 Vrms) protects against ground loops, while configurable message queuing optimizes PLC scan times. ProSoft’s **Configuration Studio** software simplifies tag mapping with pre-defined AOIs (Add-On Instructions) for rapid deployment.

Non-volatile memory retains configurations during power loss, and hot-swappable design minimizes downtime. The module supports up to 247 Modbus devices per port, with dynamic address translation for legacy systems. Rugged construction includes surge suppression (IEC 61000-4-5) and conformal coating for harsh environments.

Application Areas

Industrial automation bridging ControlLogix with Modbus devices (e.g., meters, HMIs, drives). Water/wastewater SCADA systems, oil & gas RTU networks, and building management systems. Used in energy monitoring, HVAC control, and legacy equipment retrofits.

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Installation and Configuration

**Installation**: Insert into ControlLogix chassis (slot 0-17). Terminate RS-485 networks with 120Ω resistors. Use shielded CAT5e/CAT6 for Ethernet. Ground shields at one end for noise immunity.

**Configuration**: Import AOIs into Studio 5000. Define data maps in Configuration Studio. Assign IP addresses via DHCP or static setup. Validate with built-in diagnostic LEDs (Port Status, Error).

Maintenance and Diagnostics

Monitor communication health via **ProSoft Message Monitor**. Update firmware via Ethernet or SD card. Clean terminals annually with isopropyl alcohol. Replace backup battery (CR2032) every 5 years.

Product Assurance

ProSoft provides a 3-year warranty with 24/7 technical support. The MVI56-MCM undergoes 500-hour burn-in testing and complies with IEC 61131-2 for industrial environments. SIL 2 certification available for safety-critical applications.

Note: Verify Modbus register mapping with slave devices. Use ProSoft’s **MVI56-MCM-GS** Getting Started Guide for detailed wiring diagrams.

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