S7-1200 PID-Compact

aleb2

Hi!

is it possible set dynamically the  max value of PID-Compact block out,

change the parameter "out value max limit" according to a condition evaluated in the program?

Thanks

Which "out value max limit" do you mean? Perhaps you speak of a translation with that meaning, so showing a screen capture and mentioning the software / hardware version could be helpful.

In concept you have on of two options:

1) Configuration is stored in the DB that represent the PID technology object. You could manipulate the value in the DB. See the picture that shows how you can find the address. The in-software documentation should also make mention of the addresses. (I did not check the last point.)

2) Have the PID give out a value of between 0% and 100% and rework the value to the scaling that you want. You can use the SCALE_X to rescale the (Output / 100.0) to whatever you choose. 

To enable others to verify my notes, please share with us how your PID is configured and whereto the output is going.