Akbrewer
Member
I have a burner that uses two fuel sources. Currently we only have one PID tag that runs the fuel controls for the active burner, but if we change fuel sources then I have to readjust all of the PID settings for the different type of fuel burner so it runs smoothly.
I don't want to make up another PID tag name, as this current tag is tied to some operator screens and processes that read/write from it.
So I was wondering if there is a way to keep the same PID tag name for both burners, but have two different sets of PID values stored in the PLC that would then write into that PID tag when the different burner type is selected?
I read up a bit on the COP and MOV features, but can't quite figure out how to do this for the entire PID data set. I should add that I'm a novice programmer so the copy feature makes me nervous if I don't set the element length correctly as I read some other posts on here where it could potentially lock up the PLC if it can't find the data.
Anyone have an example that you can share of how I can copy and rewrite the entire data table of a PID in one move?
Thanks as always for the help!
I don't want to make up another PID tag name, as this current tag is tied to some operator screens and processes that read/write from it.
So I was wondering if there is a way to keep the same PID tag name for both burners, but have two different sets of PID values stored in the PLC that would then write into that PID tag when the different burner type is selected?
I read up a bit on the COP and MOV features, but can't quite figure out how to do this for the entire PID data set. I should add that I'm a novice programmer so the copy feature makes me nervous if I don't set the element length correctly as I read some other posts on here where it could potentially lock up the PLC if it can't find the data.
Anyone have an example that you can share of how I can copy and rewrite the entire data table of a PID in one move?
Thanks as always for the help!