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GE General Electric Noise Reduction Machine GFK-0787B User Manual

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7-12
Genius
tModular Redundancy Flexible Triple Modular Redundant (TMR) System 
User’s Manual – March 1995
GFK-0787B
PLC OK Flags
The meanings associated with the three PLCOK flags are listed below:
At PLC A
PLCAOK
PLC A outputs enabled
At PLC A
PLCBOK
PLC B communications with PLC A healthy
and PLC B outputs enabled
PLCCOK
PLC C communications with PLC A healthy
and PLC C outputs enabled.
At PLC B
PLCAOK
PLC A communications with PLC B healthy
and PLC A outputs enabled
At PLC B
PLCBOK
PLC B outputs enabled
PLCCOK
PLC C communications with PLC B healthy
and PLC C outputs enabled.
At PLC C
PLCAOK
PLC A communications with PLC C healthy
and PLC A outputs enabled
At PLC C
PLCBOK
PLC B communications with PLC C healthy
and PLC B outputs enabled
PLCCOK
PLC C outputs enabled.
Resetting Status Flags
Startup status flags (with asterisks in the table on the previous page) remain set until the sys-
tem is restarted. They can also be reset by the application program. To reset a status flag, enter
0 in its %M reference.