The Prosoft MVI56-MCM Modbus Master/Slave Communication Module connects Rockwell ControlLogix processors with Modbus devices. It supports Modbus RTU and ASCII, offering both Master and Slave functionality. With flexible configuration and robust diagnostics, this module simplifies integration into SCADA systems and industrial automation networks.
Communication Capabilities
The MVI56-MCM supports up to 100 commands per master port, configurable for function codes, data ranges, and slave addresses. In Master mode, it polls multiple devices continuously or on data changes. In Slave mode, it responds to external Modbus Masters with selectable node addresses from 1 to 247. Floating-point data support enables compatibility with Enron and Daniel® protocols.
Hardware and Interface Design
This single-slot module installs into a 1756 ControlLogix chassis and communicates via ladder logic. It uses licensed backplane technology for high-speed data transfer. Two application ports (P1 and P2) support RS-232, RS-422, and RS-485 with full hardware handshaking. One RJ45 configuration port provides RS-232 access for setup and monitoring. Optical isolation (500 V) enhances reliability in harsh environments.
Technical Specifications
| Specification | Detail |
|---|---|
| Manufacturer | Prosoft Technology |
| Model | MVI56-MCM |
| Compatible Platform | Rockwell ControlLogix |
| Module Type | Single-slot 1756 module |
| Data Transfer | Ladder logic integration |
| Supported Protocols | Modbus RTU, Modbus ASCII |
| Master Mode | Up to 100 commands per port |
| Slave Mode | Node address 1–247 |
| Communication Ports | 2 application ports (RS-232/422/485), 1 RS-232 config port |
| Baud Rate | 110–115,200 bps, configurable |
| Data Bits | 7 or 8 |
| Stop Bits | 1 or 2 |
| Parity | None, Even, Odd |
| RTS Delay | 0–65,535 ms configurable |
| Isolation | 500 V optical from backplane |
| Current Draw | 800 mA @ 5 VDC, 3 mA @ 24 VDC |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | –40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Shock Resistance | 30 g operational, 50 g non-operational |
| Vibration Resistance | 5 g, 10–150 Hz |
| Indicators | Status, backplane transfer, application, serial activity |
| Included Cables | RJ45-to-DB9M, 6-ft RS-232 cable |
Functional Advantages
The MVI56-MCM features menu-driven diagnostics, LED indicators, and RSLogix integration for simplified configuration. Engineers can monitor controller tags directly in RSLogix and access database contents through a PC connection. These tools streamline setup, troubleshooting, and ongoing maintenance.
Applications
The Prosoft MVI56-MCM serves automation projects requiring reliable Modbus communication. It integrates PLCs with SCADA systems, field devices, and third-party controllers. Its scalability, dual ports, and floating-point support make it ideal for process control and industrial data exchange.
Details
| Weight | 0.22 kg |
|---|---|
| Dimensions | 145 × 140 × 35 mm |
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