ones_zeros

HelloI have a Scripting question on Wonderware System Platform.I was needing to know how to write a script to add two values together.for example i have two flow meters and i what to write a script that basicly says take flow meter value #1 (add) flow meter value #2 = flow_total and then use this flow_total tag for my trending.I dont know if something like this would work (Flow_Total=Flow#1+flow#2)I can do this fine in an expression when totaling values on a tag, but I need to do this for trending.Trend wont let me use two tags Thanks for the help

Hello, I'm new to PLC programming & was needing some advise on controlling 2 valves simultaneously. These valves will be controlling natural gas flow through pipe lines. The valves will need to move at the same time at the same % The valves are the same with the same actuators. I inherited this project & there is already a PLC on site controlling a compressor station, so I was just going to add these 2 valves to the analog outputs to the controler tags on the current program. I would have an analog output to control the valve & analog input for valve feedback for each valve. So, the question is that they want both valves to move simultaneously when controlled from a remote site via SCADA HMI program. How would be the best way to program this in the PLC? I'm assuming I would only have one Tag on our SCADA program to control both valves, that way both would move at same time & have my feedback showing the % the valves are open. I appreciate the help!