Calling FB or FC in AC500 PLCs
I am new in ABB plc.
Please help me about calling FB or FC in POU.
can we call FB or FC in FBD language or we must use ST or IL language?
My program has 3 FB and i want calling them in POU, but i dont know how?
You can call FB or FC in FBD or other languages,that supported by Codesys.
Once the Function Block is created, you must declare VAR_INPUT & VAR_OUTPUT variables that will be used in the program to pass data to, and get data from the function block. All instances of a function block must be declared just like any other variable data type. See the attached example of calling the Funtion Block below.
Please see attached picture for more details.
Hope it helps.