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Modbus TCP/IP Client/Server Enhanced Network Interface Module for ControlLogix


The MVI56E Modbus TCP/IP Client/Server Enhanced Communication Module allows Rockwell Automation ControlLogix processors to interface easily with Modicon Programmable Automation Controllers (PACs) and a wide variety of Modbus TCP/IP-compatible instruments and devices.

MVI56E 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.

The MVI56E-MNET and MVI56E-MNETXT are functionally the same. The MVI56E-MNET is designed for standard process applications. The MVI56E-MNETXT is designed for the Logix-XT control platform, allowing it to operate in extreme environments, at higher operating temperatures, and has a conformal coating to protect it from harsh or caustic conditions.


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Features and Benefits

Backward Compatibility

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

For Extreme Environments(MVI56E-MNETXT Only)

  • Conforms to the EN60079-0 and EN60079-15 standards for applications in caustic and extreme temperature environments
  • Operates in temperature extremes from -25° to 70° C (-13° to 158° F)
  • Conformal coating protects against caustic or corrosive environmental elements

RSLogix 5000 Integrated

  • Module communication is integrated within RSLogix 5000 using a sample Add-On Instruction (AOI) or sample ladder logic file

Graphical User Interface Software

  • ProSoft Configuration Builder software (PCB) provides online or offline configuration and diagnostics using high-speed Ethernet port
  • CIPconnect-enabled, allows remote configuration and dignostic 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 Ethernet port provides a web server for local access to documentation, module status, and firmware update software
  • ProSoft Discovery Service, a software utility to locate MVI56E modules on the network and assign a temporary IP address for easy configuration


  • Backward-compatible with previous MVI56-MNET version
  • Single-Slot 1756 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
  • 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 (AOI) 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




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)


  •  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


ProSoft Configuration Builder Last Modified 03/18/2014
MVI56E-MNET/MNETXT Datasheet 344.96 kB Last Modified 06/10/2014
MVI56E-MNET(XT) User Manual 3.04 MB Last Modified 04/23/2014
MVI56E-MNET-MNETXT Set-Up Guide 1.35 MB Last Modified 07/07/2010
MVI56(E)-MNET Add-On Instruction Installation Guide 1.02 MB Last Modified 01/21/2010
MVI56(E) MNET Add-On Instruction 59.36 kB Last Modified 06/18/2013
MVI56E-MNET Sample Ladder 1.75 MB Last Modified 11/20/2013
MVI56E-MNET EDS File 597 B Last Modified 05/11/2010
ProSoft Discovery Service v1.1.4.4 22.63 MB Last Modified 04/28/2014



Ex Certificate (ATEX Directive) 108.10 kB Last Modified 05/20/2014
CB Safety 327.83 kB Last Modified 05/20/2014
CE Mark 90.86 kB Last Modified 05/20/2014
Russian GOST-R 1.23 MB Last Modified 11/01/2012
GOST-R Declaration of Conformity 6.68 MB Last Modified 11/01/2012
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