Special Function Relay : F Area - LG MASTER-K10S1 User Manual

Programmable logic controller
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■ ■ ■ ■ Special Function Relay : F area
F relay is used as only input operand.
Relay
Name
F000
RUN flag
F001
PGM flag
F002
PAU flag
F010
Always on
F011
Always off
F012
1 scan on
F013
1 scan off
Turnover per
F014
each scan
Communication
F020
error
~ F02F
information
F030
Serious error
F031
Light error
F050
Error code
~ F05F
Description
Set when the PLC is on RUN mode.
Set when the PLC is on PGM(program) mode.
Set when the PLC is on PAU (pause) mode.
Use as a dummy relay or initialization in user
programs
On during the first scan after PGM → RUN mode
Off during the first scan after PGM → RUN mode
Repeat set / reset according to each scan during
PLC is RUN mode.
•Related to SEND, RECV instructions only
•Upper byte : The station No. where error occurred
•Lower byte : error code
•The error code of time out error : h20
•No error : h0000
Set in case of internal ROM error, 24V fail error.
Set in case of WDT error, program error, I/O
combination error, missing END/RET error.
• h0000 : No error
• h0014 : I/O error
• h0021 : Parameter error
• h0025 : Missing RET error
MASTER-K10S1
• h0023 : Code error
• h0024 : Missing END error
6

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