Analog Input AB NI8 Wont Enabled

Studio5000 has TASK, Programs, Routines in that order. You do not need JSR's if you create new TASK or Programs within a TASK, but if add routines then they must be called by a JSR. In the SLC there is only one Program, and ladder 2 is the main routine. All others must be called.

Yes, that is correct.

With RS Logix 500 (with reference to your SLC 500) LAD 2 is your main program file, which does not require a JSR. The following files, LAD 3 onwards are subroutine files, and require a JSR to be scanned. The JSR can be in the main program file, or any subroutine file which has been called.

Thank you so much for the discussion..
Can't wait to to check my workshop soon tomorow.

Many thanks!