Reading Robot27 Dispenser pressure

Hello,

I am looking to display the pressure onto an HMI, but don’t know how. I have a productivity 1000 PLC communicating between the COBOT and HMI, but cannot get the pressure from ROBOT27 Dispenser to display onto the HMI. I have analog I/O that I tried to parallel with, and tried MODBUS. Could it just be a mapping issue or a logic issue?