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6 . PROGRAMMING FUNCTION OPERATION PROCEDURES
6.8.4 Program check
./
MELSEC-A
I
Basic Operation
(1) The
sequence program is checked by pressing
and
,
Items which are checked are as follows:
( a ) Dual coil check:
Devices ( Y , M, L, E, F, T, and C) in sequence instructions(OUT, SET,
SFT, PLS, MC, and PLF) are checked for dual coils.
(b) Instruction code check:
Sequence program instruction codesare checked.
( c ) ENDinstruction check:END
instructionin sequence program is checked.
(2) Whenan error hasbeen found as a result of the check, the step number and anarror messageare displayed. Checking may be resumed by pressing
beginning a t the next step.
Since all instructions from step 0 to the END instruction are checked, this may take a few seconds.
B,
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IB iNAi 66051-A