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Modbus support – Rockwell Automation 1756-L6x_L7x ControlLogix System User Manual User Manual

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118

Rockwell Automation Publication 1756-UM001O-EN-P - October 2014

Chapter 6

Serial Communication on 1756-L6x Controllers

Modbus Support

To use ControlLogix controllers with the Modbus protocol, establish a serial port
connection and execute a ladder-logic routine.

Two controller projects specific to the Modbus network are available as sample
programs within the Logix Designer application:

ModbusMaster.ACD

ModbusSlave.ACD

For information about using these sample programs, see the Using Logix5000
Controllers as Masters or Slaves on Modbus Application Solution, publication

CIG-AP129

.