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4 SFC PROGRAM CONFIGURATION
MELSEC-Q
4.8 SFC Comment Readout Instruction
SFC comment readout instruction can read comments of steps being activated in the specified
blocks or those of the transition condition associated with active steps.
The instructions to read SFC comment are listed below.
Name Ladder Expression Function
Instruction to read SFC step
comment
S.SFCSCOMR
SP.SFCSCOMR
Reads comment of an active step in the specified
block.
Instruction to read comment of
SFC transition condition
S.SFCTCOMR
SP.SFCTCOMR
Reads comment of transition condition associated
with an active step in the specified block.