STOP Command (Execute Menu)

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Select the menu command Execute > Key Switch Position > STOP to put the simulated PLC in STOP mode. You can also do this by clicking the STOP check-box in the CPU view object.

In STOP mode, the CPU does not run the program. Unlike STOP mode for real CPUs, the outputs are not set to predefined ("safe") values but remain at the state they were in when the CPU changed to STOP mode. You can download programs to the CPU while the CPU is in STOP mode. Changing from STOP mode to RUN mode starts execution of the program from the first instruction.

See also:

CPU Operating Modes