Product Details

The ProSoft MVI56E-MNETR is an enhanced Modbus TCP/IP communication module designed for Rockwell 1756 ControlLogix chassis, equipped with reduced I/O data block specially optimized for remote rack and redundant controller applications over ControlNet or EtherNet/IP networks. It operates as both Modbus TCP client and server at the same time, supporting up to 30 client connections to collect analog values, digital status, counter data and alarm signals from Modbus TCP field devices, and it can respond to read and write requests from SCADA, HMI and other master hosts as a Modbus TCP server. The internal register database supports up to 5000 16-bit registers for flexible tag mapping between Modbus network and ControlLogix processor. The reduced backplane data image effectively cuts down backplane bandwidth consumption, reduces communication delay and timeout risks when deployed in remote racks, which is the core difference from the standard MVI56E-MNET module. It comes with one 10/100Mbps auto-crossover RJ45 Ethernet port, built-in web server and CIPconnect technology, allowing engineers to finish remote configuration, online diagnosis and firmware upgrade through Rockwell CIP networks. Data exchange between the module and ControlLogix processor runs asynchronously on the backplane, so Modbus polling and response processing will not occupy controller scan time and disturb real-time control logic. This module is backward compatible with legacy MVI56-MNETR, so users can replace the old unit directly without rewriting the original control program. Add-on instructions and sample ladder logic are provided for RSLogix 5000 and Studio 5000, and ProSoft Configuration Builder software is used to edit connection lists, command schedules and register mapping tables.

This module can be installed in local or remote 1756 ControlLogix chassis and draws 800mA at 5VDC from the backplane. It supports hot-swappable operation for on-site replacement without shutting down the whole rack. The front panel has a 4-character scrolling alphanumeric LED display to show IP address, connection status and fault prompts for fast on-site inspection and troubleshooting. It supports CF personality card to store complete configuration files for quick recovery and spare module swap. The operating temperature range is 0°C to 60°C, with industrial EMC protection against surge and electrostatic interference, and meets shock and vibration standards for industrial automation sites. It supports configuration backup and remote firmware upgrade to reduce field maintenance workload.

This reduced data block Modbus TCP module is widely used in remote rack SCADA, redundant ControlLogix systems, water treatment, petrochemical, pipeline monitoring and distributed factory networking projects. It brings native Modbus TCP client/server connectivity to remote ControlLogix racks without extra standalone protocol gateways, solving bandwidth pressure problems on remote backplane links. As a discontinued legacy communication module, the MVI56E-MNETR is mainly supplied as spare replacement parts for running automation systems. It maintains stable bidirectional Modbus TCP/IP data transmission, preserves the original field instruments and network wiring, and reduces the transformation cost of distributed remote rack system integration.