I have read some threads on PID functions (and some of them touched on cascade PID functions) and some manuals, but I am still a little confused. (using 1769-L31 and RSLogix 5000)

"I am missing" the most important part of the equation: How do I enter the SetPoint value for the PID? Essentially, what the function is asking for is PID, Process Variable, Tieback, Control Variable and the Inhold Bit and Inhold Value.

Is the PID word where the SetPoint is supposed to be entered? If that is the case, do I have to move the SetPoint value into the creates PIDs? To be honest, I am not exactly sure how to do this.

The second problem I am having are figuring out what the Inhold Bit and Value are supposed to be? The Help section of RSLogix is not really helpful regarding this. Is the Bit a bit the function checks to see if the PLC is in some kind of hold mode and the Value a value it uses for control while in the hold?

Thanks a lot! Jan