Product Details

The ProSoft MVI56E-MNETC is a high-performance multi-client enhanced Modbus TCP/IP communication module designed for Rockwell 1756 ControlLogix chassis. It supports simultaneous Modbus TCP/IP client and server operation, and is optimized for systems that need to connect a large number of Modbus TCP server devices at the same time. This module supports up to 30 independent client connections and 20 server connections, and it can act as a powerful data concentrator to collect analog readings, digital status, counter values and alarm data from multiple Modbus TCP instruments, controllers and meters, then exchange these data with the ControlLogix processor. The internal register database can hold up to 10000 16-bit registers, which supports larger data exchange requirements compared with standard MNET modules, suitable for complex industrial monitoring networks. It is equipped with one 10/100Mbps auto-crossover Ethernet port, built-in web server and CIPconnect technology, allowing engineers to complete remote configuration, online diagnosis and firmware upgrade through EtherNet/IP or ControlNet. The data exchange between the module and ControlLogix processor runs asynchronously over the backplane, so Modbus polling and data response will not occupy the controller scan time and affect real-time control logic. It supports standard Modbus function codes and MBAP message format, and add-on instructions and sample ladder logic are provided for RSLogix 5000 and Studio 5000. ProSoft Configuration Builder software is used to edit connection lists, command settings 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 full 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 multi-client Modbus TCP Ethernet module is widely used in petrochemical, water treatment, power distribution SCADA, energy management and factory multi-device networking projects. It brings native high-capacity Modbus TCP connectivity to ControlLogix without extra standalone protocol gateways, and performs better when communicating with many Modbus TCP servers at the same time. As a discontinued legacy communication module, the MVI56E-MNETC 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 large-scale heterogeneous Ethernet device integration.