- Model: MVI56E-MNETC
- Brand: ProSoft Technology (Allen-Bradley ControlLogix ecosystem)
- Series: ControlLogix in-chassis MVI56E
- Core Function: Link ControlLogix CPU to Modbus TCP IP devices as multi client server
- Product Type: Modbus TCP/IP Multi Client/Server enhanced network interface module
- Key Specs: Single-slot 1756 backplane | 10/100 Mbps Ethernet | 10,000 16-bit registers
- Condition: New Original (New Surplus) — confirm with supplier test reports and packaging photos
Product Introduction
ProSoft MVI56E-MNETC is a ControlLogix in-chassis Modbus TCP/IP Client enhanced communication module that connects Allen-Bradley CPUs to Ethernet-based Modbus devices through a single-slot 1756 interface. Typical applications include integrating drives, RTUs, power meters, remote I/O, and third-party PLCs into a Logix architecture using Modbus TCP/IP as the field protocol.
The module supports up to 30 client connections and 20 server connections, with a 10,000-register user database mapped into controller tags and configured via ladder or AOI, which simplifies large Modbus networks and centralizes data concentration. Enhancements such as Ethernet-based configuration, CIPconnect diagnostics, and backward compatibility with MVI56-MNETC reduce engineering time during upgrades and migrations.
Frequently Asked Questions
Q: Does the MVI56E-MNETC support hot-swapping in a ControlLogix rack?
A: From a hardware perspective it behaves like other 1756 communication modules, so insertion and removal under power follow standard ControlLogix chassis rules, but pulling the card instantly drops all Modbus TCP/IP communications on every client and server session. Honestly, I treat any swap as a planned maintenance activity with the process in a safe state, clear bypass or manual mode for connected equipment, and confirmed chassis and power ratings from Rockwell documentation before allowing technicians to work live.
Q: Is the MVI56E-MNETC obsolete, and what are the replacement options?
A: The MVI56E-MNETC is listed as backward compatible with older MVI56-MNETC modules and is still presented as the enhanced Modbus TCP/IP in-rack interface; the MVI56E-MNETCXT variant adds Logix-XT temperature range and conformal coating while remaining functionally identical. For a straight swap from MVI56-MNETC, ProSoft expects you to review firmware, database size (10,000 registers), and configuration method, but the module family is designed to preserve existing architectures rather than force a gateway change. Always verify lifecycle status and migration notes directly in the latest ProSoft product bulletins.
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