4 Fault Isolation
4.3 Fault Isolation Concepts
R688 HPM High-Performance Process Manager Service 323
December 2020 Honeywell
Table 58 Communications and Control Processor Hard Failure Codes
Corrective Action
(See Table 57)
Configure timeout/Transmit hang
Not enough task channels available.
RX buffer already assigned
RX buffer was not assigned
Reply-mask/request type mismatch
Error in assignment to driver
Unexpected channel not open; not
result of bad network message
LLC detected faulty transmitter
LLC called COMM_FAIL routine
Timesynch stuck in diagnostic mode
Reserved for future UCNC driver crash
codes.
Event Distributor returned bad MTOS
status waiting for its LEF to be set.
Event Distributor returned bad MTOS
status resetting its LEF.
Illogical PN$Add_MMS_Request
return status to Event Distributor.
Event Distributor encountered illegal
event record.
MTOS error, could not change priority
of given event producer task.
Bad event packet detected.
MTOS error, could not return event
producer task to its inherent priority.