ProSoft Technology MVI56E Series Modules

Technical Dossier

Product Details And Specifications

ProSoft Technology MVI56E Series: Comprehensive Module Range and Technical Overview

The ProSoft Technology MVI56E series represents the second-generation in-chassis communication module platform designed for Rockwell Automation Allen-Bradley ControlLogix (1756) backplane environments. These modules are deployed across global heavy industry sectors including petrochemical refineries, nuclear power auxiliary systems, offshore oil & gas platforms, pulp and paper mills, and water treatment infrastructure. The MVI56E platform replaced the legacy MVI56 series by introducing an enhanced onboard web server, expanded diagnostic LED arrays, and a dedicated Ethernet configuration port — eliminating the need for serial passthrough configuration. Installed base estimates place MVI56E-series modules in tens of thousands of ControlLogix racks worldwide, making lifecycle support and spare parts availability a critical operational concern for plant maintenance teams.

The Evolution of MVI56E Architecture

The ProSoft MVI56E architecture evolved directly from the original MVI56 platform (circa 2002–2008), which used a DB9 serial configuration interface and lacked onboard diagnostics beyond basic LED indicators. The MVI56E generation (introduced approximately 2008–2010) standardized on an RJ45 Ethernet configuration port, an embedded web server accessible via browser for real-time diagnostics, and a dual-port memory map structure that improved data throughput between the module and the ControlLogix processor. Firmware architecture shifted to support user-configurable port parameters via ProSoft Configuration Builder (PCB) software, replacing the earlier ProSoft Configuration Manager. Compatibility constraints are significant: MVI56E modules require ControlLogix firmware 13.x or later and are not backward-compatible with SLC 500 or PLC-5 backplanes. For systems running legacy ControlLogix L1/L2 processors, the original MVI56 series remains the only in-chassis option. As of 2024, the MVI56E series is in a mature/sustaining lifecycle phase — ProSoft continues to manufacture and support these modules but has introduced the MVI56E-GSC and next-generation PLX51 series as migration paths for new installations. For existing plant infrastructure, MVI56E modules remain the preferred drop-in replacement due to identical backplane footprint and configuration file compatibility.

MVI56E Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commercially available models within the ProSoft Technology MVI56E series. Models are classified by protocol and functional role within the ControlLogix system architecture.

Modbus Protocol Modules

• MVI56E-MCMXT: Modbus Master/Slave, extended temp (-25°C to +70°C), ControlLogix in-chassis
• MVI56E-MCM: Modbus Master/Slave dual-port serial, standard temperature range module
• MVI56E-MNET: Modbus TCP/IP Client/Server over Ethernet, dual RJ45 ports
• MVI56E-MNETXT: Modbus TCP/IP Client/Server, extended temperature (-25°C to +70°C) variant
• MVI56E-MNETR: Modbus TCP/IP with EtherNet/IP routing capability for multi-network bridging

PROFIBUS Protocol Modules

• MVI56E-PDPMV1: PROFIBUS DPV1 Master, supports acyclic messaging and Class 2 master functions
• MVI56E-PDPS: PROFIBUS DP Slave module for ControlLogix integration into PROFIBUS master networks

DNP3 Protocol Modules

• MVI56E-DNP: DNP3 Master/Slave serial, used in SCADA and utility substation automation
• MVI56E-DNPNET: DNP3 over TCP/IP Ethernet, dual-port for redundant network topologies

IEC 60870 Protocol Modules

• MVI56E-104S: IEC 60870-5-104 Slave over TCP/IP, utility grid SCADA integration
• MVI56E-101S: IEC 60870-5-101 Slave serial, legacy telecontrol protocol for power utilities

HART Protocol Modules

• MVI56E-HART: HART Master, supports up to 16 HART devices per port for field instrument integration

ASCII / Generic Serial Modules

• MVI56E-GSC: Generic Serial Communication module, configurable ASCII/binary protocol support
• MVI56E-GSCXT: Generic Serial Communication, extended temperature variant for harsh environments

BACnet Protocol Modules

• MVI56E-BACE: BACnet/IP Client/Server, building automation and HVAC system integration

Sourcing Hard-to-Find & Obsolete MVI56E Parts

Quality Control for the MVI56E Range

MVI56E modules present specific test challenges due to their dual-port serial architecture, onboard Ethernet configuration interface, and backplane communication bus. DriveKNMS applies a structured test protocol to all MVI56E units prior to dispatch. Each module is seated in a live ControlLogix 1756 test rack running a compatible L-series processor. Backplane communication is verified via RSLogix 5000 / Studio 5000 online diagnostics, confirming module status bits, data table population, and error register behavior. The onboard web server is accessed via the Ethernet configuration port to verify firmware version, port configuration retention, and diagnostic page responsiveness. For serial-port modules (MCM, MCMXT, GSC variants), both RS-232 and RS-485 port modes are tested using loopback and live Modbus poll sequences. Extended temperature variants (XT suffix) are verified for thermal stability under accelerated thermal cycling. All test results are documented and available upon request with each unit shipment.