Chapter 4. CPU module
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3) External device Ordinary-fault (Warning) Processing
.
(1) If a warning of external device is detected and the corresponding flag of the system flag _ANC_WB[n]
is set to on, the flag will checked from the _ANC_WB[0] at the time that scan program finishes its
execution. If an error is indicated on the flag, it will be also indicated on the _ANNUN_WR of the
representative system warning flag _CNF_WAR. External device waning numbers will be written to
from _ANC_WAR[0] to _ANC_WAR[7] according to occurrence sequence.
(2) The user can know the cause of error by use of the GMWIN, and also by direct monitoring of the flags
_ANC_WAR[n] and _ANC_WB[n].
(3) If an external device waning is removed, that is, the elements of _ANC_WAR[n] are released from
warning, the corresponding _ANC_WAR[n] will be automatically cleared. If all element flags are
cleared, the flag _ANNUN_WR of the system flag _CNF_WAR will be reset.