Considerations for Using Function Blocks (FB) in PLCs
1. Considerations for Using Function Blocks (FB) with Enable Inputs (EN/ENO) Function Blocks with EN/ENO behave more “intelligently” but are also more complex, requiring attention to their execution mechanism. 1. Understand the meaning of “not executing” Core note: When EN = FALSE, the internal code of the FB is completely skipped and not executed at … Read more