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MVI56-Ethernet Picture

'C' Programmable Application Development Module with Ethernet for ControlLogix


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The MVI56 Application Development Communication Module with Ethernet is a ControlLogix backplane compatible module that allows Rockwell Automation ControlLogix processors to interface easily with Ethernet protocol (Explicit Messaging) compatible devices and hosts utilizing custom 'C' code. Devices commonly supporting the protocol include Rockwell Automation PLCs, and host HMI systems.

Features and Benefits

The ADMNET module is a powerful solution that will support both Client and Server applications. This broad support enables the module to function as a data collection client, or as a server to another host. Applications for the module are found in most industries, especially Manufacturing, Oil and Gas, Electrical Power and Food processing.

The MVI56-ADMNET module is a single slot, backplane compatible solution for the ControlLogix platform. This module is a powerful and programmable solution supporting two fully isolated serial ports and one Ethernet port allowing the many field devices to be integrated into the ControlLogix platform.


The MVI56-ADMNET module is the ideal solution for many applications where Ethernet and serial connectivity must be added to a ControlLogix platform. Applications using the MVI56-ADMNET module include:

  • Bar code scanner interface
  • Legacy ASCII protocol connections
  • Terminal port emulation
  • Printer driver (alarm/status printer)
  • Customized protocol implementations


  • Single Slot - 1756 backplane compatible
  • The module is recognized as an Input/Output module and has access to processor memory for data transfer between processor and module
  • Ladder Logic is used for data transfer between module and processor. Sample ladder file included.
  • Configuration data obtained from configuration text file downloaded to module. Sample configuration file included.
  • Local or remote rack.

The MVI56-ADM API Suite allows software developers access to the top layer of the ControlLogix backplane and serial ports. The MVI56-ADMNET API suite accesses the Ethernet port.

Both APIs can be easily used without having detailed knowledge of the module's hardware design. The MVI56-ADMNET API Suite consists of the Ethernet Port API. The Ethernet Port API provides access to the Ethernet network. Applications for the MVI56-ADMNET module may be developed using industry-standard DOS programming tools and the appropriate API components.

The MVI56-ADMNET module has three serial ports, two of which are isolated for field interfaces, and one Ethernet port.

  • CFG: debug/configuration RS-232
  • PRT1: Application RS-232, RS-422 or RS-485
  • PRT2: Application RS-232, RS-422 or RS-485
  • Ethernet Port

PRT1 and PRT2 are jumper configured for direct or multi-drop field communication. The application program can be written to control the two application ports independently, allowing maximum flexibility in the design.




Backplane Current Load

800 mA @ 5.1 VDC
3 mA @ 24 VDC

Operating Temperature

32° F to 140° F (0° C to 60° C)

Storage Temperature

-40° F to 185° F (-40° C to 85° C)


30 g Operational
50 g non-operational


5 g from 10 to 150 Hz

Relative Humidity

5% to 95% (without condensation)

LED Indicators

Module Status

Backplane Transfer Status

Application Status

Serial Activity

Application port (Ethernet)

Ethernet Port (Ethernet modules)

10/100 Base-T

RJ45 Connector

Link and activity LED indicators

Electrical Isolation 1500 V rms at 50 Hz to 60 Hz for 60 s, applied as specified in section 5.3.2 of IEC 60950: 1991

Ethernet Broadcast Storm Resiliency = less than or equal to 5000 [ARP] frames-per-second and less than or equal to 5 minutes duration

Shipped with Unit

RJ45 to DB-9M cables for each port

6-foot RS-232 configuration cable

Debug/Configuration port (CFG)

CFG Port (CFG)

RJ45 (DB-9M with supplied cable)

RS-232 only

No hardware handshaking


Ex Certificate (ATEX Directive) 79.81 kB Last Modified 11/22/2019
CB Safety 41.99 kB Last Modified 02/26/2020
Declaration of Conformity (RoHS/CE) 301.57 kB Last Modified 03/04/2018
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Korean KC Registration 592.82 kB Last Modified 03/13/2020
Lloyd's Register 2.13 MB Last Modified 11/01/2012
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