Honeywell Experion C300 User Manual page 249

Soft Fail Message
IOL Channel A Failure
IOL Channel B Failure
R301.1
11/06
Condition when indicator is lit
Indicates that Channel A of the
IOLink has failed.
Indicates that Channel B of the
IOLink has failed.
Experion C300 Controller User's Guide
Honeywell
IOLINK block soft failures
Device Index value is zero upon power up
Corrective Action
1. Check IOLINK cable A from end
to end for proper connections.
2. Check the cable connectors at
the IOTAs and fix as needed.
3. Refer to the IOLINK Statistics for
the error counts to zero in on the
suspect link (primary IOLINK,
secondary IOLINK, or IOMs) and
replace if necessary.
Once a problem has been
identified and a fix is applied, verify
the fix by:
(a) Reset the error counts via the
I/O Link Command
"RESET_ERRORS" from the Main
Tab, then
(b) Re-enable the Periodic Cable
Swap diagnostic via the I/O Link
Command "ENB_PERSWAP" from
the Main Tab
(c) Monitor the error counts.
1. Check IOLINK cable B from end
to end for proper connections.
2. Check the cable connectors at
the IOTAs and fix as needed.
3. Refer to the IOLINK Statistics for
the error counts to zero in on the
culprit (Primary IOLINK, secondary
IOLINK, or IOMs) and replace if
necessary.
Once a problem has been
identified and a fix is applied, verify
the fix by:
(a) Reset the Error counts via the
I/O Link Command
"RESET_ERRORS" from the Main
Tab, then
(b) Re-enable the Periodic Cable
Swap diagnostic via the I/O Link
Command "ENB_PERSWAP" from
the Main Tab
(c) Monitor the error counts.
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