5201-MNET-MCM | Prosoft Modbus TCP/IP to Modbus Master/Slave Gateway

Product Overview

The ProSoft 5201-MNET-MCM is a Modular Communication Manager designed for Rockwell Automation ControlLogix and CompactLogix platforms. This versatile module provides simultaneous Modbus TCP/IP and Modbus RTU/ASCII communication, enabling PLCs to act as both master and slave across multiple networks. With an embedded web server for remote configuration and diagnostics, the 5201-MNET-MCM simplifies integration of third-party devices such as drives, meters, and RTUs into Logix environments.

Key Specifications

• Part Number: 5201-MNET-MCM
• Product Type: Modular Communication Manager (Modbus TCP/RTU/ASCII)
• Series: ProSoft 5200 Communication Manager
• Platform: Rockwell ControlLogix, CompactLogix (via 1756 or 1769 backplane)
• Ethernet Port: 1 × 10/100 Mbps RJ45
• Serial Port: 1 × RS-232 (DB9)
• Protocols: Modbus TCP/IP (Master/Slave), Modbus RTU (Master/Slave), Modbus ASCII (Master/Slave), EtherNet/IP Adapter
• Modbus TCP Clients: Up to 10 simultaneous client connections
• Modbus TCP Servers: Up to 5 MBAP + 5 encapsulated server connections
• Modbus Serial: Configurable as RS-232 or RS-485 (2-wire/4-wire)
• Configuration: Web browser, ProSoft Configuration Studio, RSLogix 5000/Studio 5000
• Power: Backplane powered (5VDC/24VDC)
• Operating Temperature: 0°C to 60°C
• Certifications: CE, UL, FCC, ATEX (model dependent)

Features & Benefits

• Multi-Protocol Flexibility: Simultaneous Modbus TCP, RTU, and ASCII support in one module
• Dual Master/Slave: Operates as Modbus Master or Slave on both Ethernet and serial interfaces
• Embedded Web Server: Configure, monitor, and diagnose via any standard web browser — no specialized software required
• Seamless Logix Integration: Data maps directly to PLC I/O data areas (N7, B3, etc.) for immediate program access
• Non-Volatile Storage: Configuration retained in internal memory across power cycles
• Compact Footprint: Single-slot module minimizes rack space requirements

Applications

• Multi-brand production lines integrating Siemens VFDs, Schneider meters, and Rockwell PLCs
• Water treatment SCADA with legacy Modbus RTU telemetry and modern Modbus TCP SCADA
• Building automation HVAC integration via Modbus serial and Ethernet BMS networks
• Oil & gas wellhead data aggregation from Modbus RTU flow computers into ControlLogix

Installation Guide

1. Power Down: Turn OFF rack power before installing the 5201-MNET-MCM
2. Slot Selection: Insert the module into any available I/O slot on the ControlLogix or CompactLogix rack
3. Ethernet Connection: Connect the RJ45 port to your plant network using Cat 5e cable
4. Serial Connection: Connect RS-232/485 serial devices to the DB9 port using appropriate cabling
5. Web Configuration: Access the module's default IP via web browser and configure network parameters
6. Protocol Setup: Define Modbus TCP client/server settings and serial port parameters (baud, parity, mode)
7. Data Mapping: Map Modbus registers to PLC data files using the configuration interface
8. Studio 5000: Add the module to your project and reference the mapped data tags in ladder logic

FAQ

Q: Can I use this module with Micro800 controllers?
A: The 5201-MNET-MCM is designed for ControlLogix and CompactLogix platforms. For Micro800, consult ProSoft for compatible communication adapters.

Q: Does it support EtherNet/IP explicit messaging?
A: Yes, the module includes an EtherNet/IP Adapter interface for integration into EtherNet/IP scanner networks.

Q: How many serial devices can I connect?
A: The single serial port supports one RS-232/485 network. For multi-drop RS-485, up to 247 devices can be addressed via Modbus RTU.

Q: Is the web interface secure?
A: The embedded web server provides configuration and monitoring. For secure environments, deploy behind a firewall or VPN as the module does not support HTTPS natively.

Selection Tips

• Verify your PLC platform (1756 vs 1769) to ensure correct module ordering
• For applications requiring only Modbus TCP, consider MVI56-MNETC for higher connection counts
• Use RS-485 (2-wire) for multi-drop serial networks; RS-232 is limited to point-to-point
• Document all Modbus register maps and device addresses before configuration
• Consider the 5201-MNET-MCM-WEB variant for enhanced web server capabilities