Program End; No Operation Instruction (Nop) - Mitsubishi Electric MELSEC-KOJIU Instruction Manual

5.2.1 1 No operation (NOP)
.....
instruction used to progress the program unique to sequencer.
I
NOP
]
Nooperation
NOP is a no operation instruction and has no influence on the results of preceding arithmetic
operation. An effective use of this instruction is to write NOP per desired step when preparing a
program and to delete
it
when the program is completeld.
*
Although NOP is a no alperation instruction, the
use of this instruction results in loss of scan time
because the step with NOP is not skipped but
scanned
.
5.2.12 END instruction (END)
Write this a t the end of program.
v l
Program end
END is entered a t the end of a required program step to declare the end of the program. The
CPU returns the program counter to "0" and initiates scanning again from the step No. "0".
The END Instruction can also be utilized temporarily a t the time of program debugging or test
and also when program is executed halfway.
48
I I
?
I