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MELSEC-F
TROUBLESHOOTING
11
11 - 5
(4) How to clear error information by writing to buffer memory
Writing to BFM#31800 to 31802 allows clearing the error information and turning
off COM.ERR.
• For FX
3U
/FX
3UC
Series PLCs
MOV
SET
HFFFF
U \
G31800
U \
G31802
MOV
H0000
U \
G31801
MOV
H0001
M100
U \
G31802
Set error information to clear
Error log and LED off instruction
Error clear execution processing
Set a flag that indicates that the
error is being cleared
Reset a flag that indicates that the
error is being cleared after the error
has been cleared.
RST
M100
=
H0002
M100
corresponds to the module number.