Omron CS1W-CLK12-V1, Руководство по эксплуатации

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Troubleshooting for Duplex Communications Units Section 10-5
Note 1. The standby Controller Link Unit continuously performs self-diagnostic
tests (memory checks and internal loopback tests for communications cir-
cuits).
The internal communications circuits are completely separate from the
transmission path and so the loopback tests will have no influence on net-
work communications. If an error is detected by self-diagnosis, the ERC in-
dicator will turn ON and the details of the error will be reflected in A437 in
the CPU Unit’s memory. If this happens, it is probably because of a hard-
ware failure and the Unit must be replaced.
2. The INS, SD, RD, M/A, LNK, and RING LED indicators on Controller Link
Units in standby mode do not turn ON.
10-5-2 Troubleshooting for Duplex Systems Using Indicators
This section describes the errors indicated by the indicators on Controller Link
Units used in duplex operation in a CS1D System and provides possible rem-
edies.
For details on troubleshooting for errors that have no relation to duplex opera-
tion, refer to 10-1 Troubleshooting Using Indicators.
Name Color Status Meaning
RUN
(operat-
ing) Green Lit Unit operating normally in active mode.
Flashing Unit operating normally in standby mode (per-
forming self-diagnosis).
Not lit Unit error.
ERC
(commu-
nications
error) Red Lit Error detected by self-diagnosis.
Not lit No error detected by self-diagnosis.
P/S
(power
supply) Green Lit Backup power is being supplied.
Not lit Backup power is not being supplied.