75
3-15 [END]
PLC repeatedly carries on input disposal, program executing and output disposal. If write
END instruction at the end of the program, then the instructions behind END instruction
won’t be executed. If there’s no END instruction in the program, the PLC executes the end
step and then repeats executing the program from step 0.
When debug, insert END in each program segment to check out each program’s action.
Then, after confirm the correction of preceding block’s action, delete END instruction.
Besides, the first execution of RUN begins with END instruction.
When executing END instruction, refresh monitor timer. (Check if scan cycle is a long timer.)
Force the
current
program scan
to end
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