Rockwell Automation T8311 Trusted Expander Interface - Manual (Page 25)

Trusted
TM
Module T8311
Issue 12 Mar 07 PD-T8311 25
Symptom Possible Cause Solution
Both active
or standby
LEDs OFF LED failure This condition may be indicated briefly during module
power-up.
If another Expander Processor module is installed within the
same chassis, use its indicators to verify the active/standby
mode of this module. To avoid confusion it is recommended
that this module be replaced at some convenient time,
initiating the active/standby changeover to the other module
if necessary.
All other
modules
within the
chassis
indicate
standby
mode. TMR Processor
not running
(faulted, or
application not
started). Verify the condition of the TMR processor and start the
application as necessary.
Expander
Processor Fault Verify the Expander Processor is faulty by checking the
reported condition within the T8300 chassis board or the
diagnostic utility. If the module is shown not to be
responding, replace the module immediately.
Expander Bus
Fault Verify that the fault is not the result of a failed Expander
Processor (see above).
Check that the Expander Bus is connected correctly at both
the Processor and Expander Chassis.
Check that the Expander Processor(s) are installed in the
correct slot(s).
Expander
Processor not
installed. Ensure a healthy Expander Processor module is installed in
the correct slot.
Minor BIU
errors
counters
incrementing Interface Module
Fault The error counters for a single module will be incrementing.
Check the values using the diagnostic utility. If the count
exceeds a defined limit, the system will attempt to indicate
this fault by setting the corresponding healthy LED on the
module to red flashing.
Replace the faulty interface module.
Expander
Processor Fault The error counters for all the modules within the
corresponding chassis will be incrementing. Check the
values using the diagnostic utility. If the count exceeds a
defined limit, the system will attempt to indicate this fault by
setting the corresponding healthy LED on the module to red
flashing.
Replace the faulty Expander Processor module as soon as
possible.
Table 3 Troubleshooting Guide