Step 1: Hook up the analog input to the RTU
Step 2: In Edit mode, select the correct data member from the driver object that communicates with that RTU. (modbus, dnp, etc.)
Step 3: Drag selected object to the screen, this creates a simple expression.
Without knowing your system that is about as I can help, good luck.
Mike
Mike Crabtree - Lead Developer
Destek of Nevada, Inc. / Digital Telemetry Systems, Inc.
(866) 964-6948 / (760) 247-9512