Issue
Which Modbus driver is required for an I/A Series Niagara R2 UNC to support Modbus TCP?
Environment
I/A Series R2, UNC-520, JACE-NXT, Soft JACE
Cause
Selection of the proper driver depends upon the functionality required (e.g. UNC acting as Modbus TCP Client or Server).
Resolution
The part numbers are:
IA-DRV-MOD-T Operates as a Modbus client - Ethernet / TCP
IA-DRV-MOD-R Operates as a Modbus server - Ethernet / TCP