The InteractX OPC Quick Client can be found here:
C:\Program Files (x86)\InteractX\COMM Server\opcquickclient.exe
First you must run the PAC's OPC Configurator by opening your
Start Menu>All Programs>Parker Hannifin>Parker Automation Manager>OPC Server V3>OPC Configurator
In the Configurator, you can edit the default connection wit the IP address of the PAC.