Publication 1763-RM001B-EN-P - April 2007
366 Communications Instructions
Modbus Command
The controller supports eight Modbus commands. If the target device
supports any of these Modbus command types, the controller should be
capable of exchanging data with the device. Supported Modbus
commands include:
Modbus Command Types
Modbus Command Used For
01 Read Coil Status reading bits
02 Read Input Status reading bits
03 Read Holding Registers reading words
04 Read Input Registers reading words
05 Write Single Coil writing 1 bit
06 Write Single Register writing 1 word
15 Write Multiple Coil writing multiple bits
16 Write Multiple Registers writing multiple words
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