MVI56-Serial Picture

IEC 60870-5-103 Master Network Interface Module for ControlLogix


Discontinued: No new product for sale. More Info

The MVI56 IEC 60870-5-103 Master Network Interface Module allows ControlLogix processors to interface easily with IEC 60870-5-103 Slave devices. The MVI56-103M module interfaces up to 32 serial communication devices with the ControlLogix processor. Two communication ports on the module act as controlling devices (Masters) to interface with controlled devices on their own networks. Each port is individually configurable. The MVI56-103M is the ideal solution for many applications where IEC-compatible devices must communicate with the ControlLogix platform. Compatible devices include relays, breakers, sub-station communication modules and other serial communication devices. Functionality of the IEC protocol is very similar to the DNP 3.0 protocol which features time stamping and True Report by Exception (TRBE). These features allow the MVI56-103M module to send a report to the processor without being polled, providing real time data transmission in critical situations.

Features and Benefits

The MVI56-103M supports up to 32 total field devices between the module's two IEC 60870-5-103 Master ports. The module's communication ports can each be independently configured, allowing two separate field networks to be implemented. The field device data is exchanged between the MVI module and the ControlLogix processor over the backplane.


The MVI56-103M module is the ideal solution for many applications where IEC protocol connectivity must be added to a ControlLogix system. The IEC solution is designed to address the expanding interest in the IEC protocol and the use of IEC compatible devices in industrial applications such as those in the water/wastewater power and oil & gas industries.

Compatible devices include relays, breakers, sub-station Communication Modules and other serial communication devices.


  • 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 MVI56-103M module supports the IEC 60870-5-103 protocol to the following specifications:

  • The IEC 60870-5-103 communication driver is built in accordance to the approved IEC specification
  • The module has two independent master ports, each configurable via a simple configuration file
  • Supports up to 32 sessions (controlled devices) between the two ports
  • Supports up to five sectors (separate databases) for each session, with individual database definition for each sector
  • Total of 1000 user configurable commands to control data transfer to/from devices (controlled devices)
  • Supports clock synchronization from/to the processor
  • Event data received from the Control Devices updates the module database (Date and Time stamping is not stored or used by module)
  • Class 1 and Class 2 delay parameters are configurable for each session
  • An IEC Interoperability Document for the module is available from the web site, which fully documents data types supported by the module




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

Debug/Configuration port (CFG)

CFG Port (CFG)

RJ45 (DB-9M with supplied cable)
RS-232 only

Application ports (PRT1 & PRT2)

Full hardware handshaking control, providing radio, modem and multi-drop support

Software configurable communication parameters

Baud rate: 110 to 115,200 baud, depending on protocol
RS-232 and 422
Parity: none, odd or even
Data bits: 5, 6, 7, or 8
Stop bits: 1 or 2
RTS on/off delay: 0 to 65535 milliseconds

App Ports (P1,P2) (Serial modules)

RJ45 (DB-9M with supplied cable)
RS-232 handshaking configurable
500 V Optical isolation from backplane

Shipped with Unit

RJ45 to DB-9M cables for each port
6-foot RS-232 configuration cable


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