Tag Archives: siemens s7 function block programming

Difference between FB and FC’s Siemens PLC

Siemens PLC Difference between FB and FC’s  characteristic  FC  FB  Can be called as a subroutine  Yes  Yes  Can assign parameters to Input/Output/InOut  Yes  Yes  Temporary variables can be used  Yes  Yes  Can use static variables (can be kept)  No  Yes  Requires instance data block (per call)  No  Yes  Parameters passed as addresses to internal […]