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MVI56E-Ethernet

Modbus TCP/IP Client/Server Enhanced Network Interface Module with Reduced Data Block for ControlLogix

MVI56E-MNETR

Which of our Modbus TCP/IP modules is best for your application?

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The Modbus TCP/IP Client/Server Enhanced Communication Module with Reduced Data Block allows Rockwell Automation ControlLogix processors to interface easily with Modbus TCP/IP-compatible devices, such as Modicon Programmable Automation Controllers (PACs) and a wide variety of Modbus TCP/IP-compatible instruments and devices.

The MVI56E-MNETR uses a reduced Input/Output (I/O) data image block size for transferring data between itself and a ControlLogix processor. This makes it ideal for remote rack applications using ControlNet or EtherNet/IP process networks. The module also works well for applications that require redundant ControlLogix processors.

MVI56E-MNETR enhancements include local and remote configuration and diagnostics through the module's Ethernet port, CIPconnect technology for bridging though Rockwell Automation ControlNet and EtherNetIP networks, and an on-board web server for access to module documentation and sample program files.

  • Architectures
  • Features and Benefits
  • Specifications
  • Hardware
  • Downloads
  • Videos
  • Certifications

Architectures

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Features and Benefits

Backward-Compatible

  • Upgrade earlier MVI56-MNETR modules without changing existing ladder logic programs or module configurations
  • Enhanced features and flexibility without incurring expensive reprogramming costs

RSLogix 5000 Integrated

  • Module communication is integrated within RSLogix 5000 using a sample Add-On Instruction (AOI) or sample ladder logic file
  • No additional programming and/or configuration software are required

Reduced Input/Output Image Size

  • Uses less bandwidth on process control networks like ControlNet or EtherNet/IP
  • Optimizes communication for more efficient remote rack installations, especially when using redundant ControlLogix processors

Graphical User Interface Software

  • ProSoft Configuration Builder (PCB) provides online or offline configuration and online diagnostics using the high-speed Ethernet port
  • CIPconnect-enabled, allows remote configuration and diagnostic access across multiple bridged EtherNet/IP and ControlNet networks using Rockwell Automation 1756-ENxT and 1756-CNB network interface modules

Web-enabled Ethernet port with Discovery Service

  • Module's built-in Ethernet port provides a web server for local access to documentation, module status, and firmware updates
  • ProSoft Discovery Service, a software utility to locate MVI56E modules on the network and assign a temporary IP address for easy configuration

Specifications

  • Backward-compatible with previous MVI56-MNETR versions
  • Single-Slot ControlLogix backplane compatible
  • 10/100 Mbps auto crossover detection Ethernet configuration and application port
  • User definable module data memory mapping of up to 5000, 16-bit registers
  • CIPconnect-enabled network configuration and diagnostics monitoring using ControlLogix 1756-ENxT and 1756-CNB modules and EtherNet/IP pass-through communication
  • Reduced I/O image size designed specifically to optimize remote rack implementations
  • ProSoft Configuration Builder (PCB) software supported, a Windows-based graphical user interface providing simple product and network configuration
  • Sample ladder logic and Add-On Instructions (AOIs) are used for data transfer between module and processor
  • Internal web server provides access to product documentation, module status, diagnostics, and firmware updates
  • 4-character alpha-numeric scrolling LED display of status and diagnostics data in plain English - no cryptic error or alarm codes to decipher
  • ProSoft Discovery Service (PDS) software used to locate the module on the network and assign temporary IP address
  • Personality Module - a non-volatile, industrial-grade Compact Flash (CF)card used to store network and module configuration, allowing quick in-the-field product replacement by transferring the CF card

Hardware

Specification

Description

Backplane Current Load

  • 800 mA @ 5 V DC
  • 3 mA @ 24V DC

Operating Temperature

  • -25° to 70°C (-13° to 158°F) - MVI56E-MNETXT

 Storage Temperature

  •  -40 to 85°C (-40 to 185°F)

 Shock

  •  30g Operational
  • 50g non-operational
  • Vibration: 5 g from 10 to 150 Hz

 Relative Humidity

  •  5% to 95% (non-condensing)

 LED Indicators

  •  Battery Status (ERR)
  • Application Status (APP)
  • Module Status (OK)

 4-Character, Scrolling, Alpha-Numeric LED Display

  •  Shows Module, Version, IP, Application Port
  • Setting, Port Status, and Error Information

 Debug/Configuration/Application Ethernet port (E1)

 Ethernet Port

  •  10/100 Base-T, RJ45 Connector, for CAT5 cable
  • Link and Activity LED indicators
  • Auto-crossover cable detection

 Shipped with Unit

  •  5-foot Ethernet straight-through cable

Downloads

MVI56E-MNETR Datasheet 345.81 kB Last Modified 12/09/2022
MVI56E-MNETR User Manual 2.92 MB Last Modified 10/23/2025
MVI56E-MNETR Set-Up Guide 1.51 MB Last Modified 07/07/2010
MVI56E-MNETR Sample Ladder 1.76 MB Last Modified 10/03/2013
MVI56E-MNETR EDS File 1.13 kB Last Modified 03/27/2017
MVI56(E)-MNETR Add-On Instruction Installation Guide 1.30 MB Last Modified 01/21/2010
MVI56E-MNETR Add On Instruction 42.06 kB Last Modified 02/27/2013
MVI56E-MNETR Optional Add-On Instruction 8.68 kB Last Modified 02/28/2013
MVI Modbus Memory Tool 33.09 kB Last Modified 07/20/2021
ProSoft Discovery Service v1.2.1.4 22.69 MB Last Modified 10/08/2025
LifeCycle Letter MVI56E Series 150.72 kB Last Modified 04/01/2026
ProSoft Configuration Builder
MVI56E CAD Drawings (STEP) 11.16 MB Last Modified 09/15/2023

Videos

Understanding Client, Server & I/O Messaging for Ethernet Networks

Understanding Modbus Serial and TCP/IP

Identify Modbus Com Errors

Data Organization in ProSoft Modules and Gateways

Guide to bit-level data addressing in ProSoft Modbus modules

Guide to 32-bit data types in ProSoft Modbus modules

Certifications

CB Safety 504.75 kB Last Modified 10/06/2021
Country Approval - Eurasian Customs Union Conformity (EAC) (Wired) 1.92 MB Last Modified 07/10/2020
IECEx 162.02 kB Last Modified 05/25/2016
Korean KC Registration 185.94 kB Last Modified 09/11/2020
Declaration of Conformity (RoHS/CE) 136.60 kB Last Modified 01/20/2023
ATEX Letter of Conformity 101.65 kB Last Modified 05/12/2022
UL CoC 83.45 kB Last Modified 06/23/2020
Declaration of REACH Compliance 388.80 kB Last Modified 12/18/2025