Product Details

The ProSoft MVI56E-MNETCR is a single-slot enhanced Modbus TCP/IP multi-client communication module specially optimized for remote ControlLogix chassis, featuring a reduced data block design to lower backplane bandwidth load on ControlNet and EtherNet/IP remote racks. It supports Modbus TCP client and server functions running simultaneously, with up to 30 independent client connections to collect analog measurements, digital status, counter readings and alarm data from multiple Modbus TCP servers, and it also accepts connection requests from SCADA or HMI masters as a server node. The internal register database supports up to 5000 16-bit registers for flexible data mapping between Modbus TCP devices and ControlLogix tags. It is equipped with one 10/100Mbps auto-crossover RJ45 Ethernet port, built-in web server and CIPconnect technology, enabling remote configuration, online diagnosis and firmware upgrade across ControlNet or EtherNet/IP bridges. The reduced backplane data image is the core advantage of this model compared with standard MNETC, which effectively reduces network traffic and communication timeout risks when the module is installed in remote racks. Data exchange between the module and ControlLogix processor runs asynchronously over the backplane, so Modbus polling and response processing will not occupy the controller scan time and interfere with real-time control logic. This module keeps backward compatibility with legacy MVI56-MNETCR, so users can replace old units directly without rewriting the existing 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 multi-client Modbus TCP module is widely used in remote rack SCADA, water treatment, petrochemical, energy management and distributed factory networking projects. It brings native Modbus TCP multi-client 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-MNETCR 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.