Honeywell Experion PKS User Manual page 260

13 PROFIBUS GATEWAY MODULE (PGM) TROUBLESHOOTING
Solution
Isolated (lonely) Node
For a redundant PGM pair, Fault Tolerant Ethernet (FTE) communications with partner and FTE network are
lost.
Diagnostic
Check
Cause 1
Solution
Cause 2
Solution
Cause 3
Solution
Cause 4
Solution
Cause 5
Solution
Duplicate Device Index setting
The FTE subsystem detects duplicate Device Index settings in separate modules.
Diagnostic
Check
Cause
Solution
Device Index value is zero upon power up
The PGM's 4-character display shows a Device Index value of zero (#000).
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Recycle power to the module. If error persists, replace the module.
Check the Trace log for breadcrumbs that occurred prior to the event. Provide the results of the trace log
to Honeywell Solutions Support Center (SSC) for analysis.
• The primary module determines whether or not to initiate a switchover. If the secondary module
was known to be in a better condition than the primary at the time of fault determination, then the
primary should fail so the secondary will switchover. But, the new secondary (old primary) still
cannot restore FTE communications.
• The secondary module should reboot once, in an attempt to restore communications. The primary
module will be able to report the problem in the secondary. If the secondary cannot restore FTE
communications, it should be able to resynchronize over the redundancy link and be a partially
functional backup.
Secondary module is defective.
Replace the secondary module that initiated switchover when fault was detected.
If secondary module synchronizes after replacement, the removed module is defective. Otherwise, go to
Cause 2.
Secondary IOTA is defective.
Replace the secondary IOTA that initiated switchover when fault was detected.
If secondary module synchronizes after replacement, the removed IOTA is defective. Otherwise, go to
Cause 3.
Primary module is defective.
Replace the primary module.
If you can command synchronization after replacement, the removed module is defective. Otherwise,
go to Cause 4.
Primary IOTA is defective.
Replace the primary IOTA.
If the module pair synchronize after IOTA replacement, the removed IOTA is defective. Otherwise, go
to Cause 5.
There is a software problem.
Contact Honeywell Solution Support Center (SSC).
All modules will stop tracking cable status for the detected duplicate Device Index value.
Communications will continue and will not impact system performance until there is a cable fault. This
fault will also be detected by the FTE System Management Tool.
A duplicate Device Index could cause a duplicate IP Address. In most cases, the duplicate IP Address
would be detected first and prevent the FTE diagnostic messages from being sent.
Device Index switches on separate IOTA's are set to same value.
Change Device Index switches setting on one of the IOTA's to a unique value.