4 Fault Isolation
4.3 Fault Isolation Concepts
342
HPM High-Performance Process Manager Service
R688
Honeywell
December 2020
Table 61 IOP Hard Failure Error Codes
Last Failure
Mnemonic
Description
Corrective Action
BADPGJMP
Current Calibration/Conversion mode
is invalid for this IOP
Select Calibration/Conversion mode that is valid for this
IOP.
CTRCKTFL
IOP counter failed.
Replace IOP card.
DMT_TMOT
Dead man timer timeout
Replace the LLAI IOP card. Call TAC if problem persists.
DPAERROR
A physical device address error.
Replace the IOP card.
DSAERROR
Device software address error.
Replace the IOP card. If multiple IOP cards failed with this
code, or a replacement IOP card fails with this same
code, the card file backpanel may be bad.
EPROMERR
EPROM checksum error.
Replace the IOP card.
INVPRGEX
Invalid program execution.
Replace the IOP card. If the replacement card provides
the same results, call TAC for assistance.
IOLJABER
I/O Link jabber circuit fired.
Replace the IOP card.
MLTOUTFL
More than one output has failed in a
DO IOP card. The DO IOP card has
failed so the outputs are set to their
shed states.
Check for the unexpected presence of an active DO
Standby Manual device connected
to the FTA. Also,
check for blown fuse F17 on the 24 Vdc nonisolated DO
FTA or improper TB1-17, 18, 19 connections on the same
FTA.
Check the FTA wiring, replace the DO IOP card and/or
the FTA.
MSTRTMOT
68K timeout.
Applicable to I/O Link Interface only (not an IOP error).
OUTCTLFL
Not applicable
POWERDWN
Power down occurred. The IOP card
lost power and restarted.
None, unless only a single IOP or group of IOPs exhibit
this problem continually when a loss of power should not
be occurring in the HPM. Check to see that the IOP is
properly inserted in the card file. Also check the seating of
the power distribution cables between the card file and
the power system.
RAMADRER
RAM address decoding error.
Replace the IOP card.
RAMCNTER
RAM contents error.
Replace the IOP card.
RXBUFOFL
Not applicable
DATBUSFL
PI data bus diagnostic test failure
Replace the IOP card
SPARE026
to
SPARE255
Not used.
N/A
SOECNTFL
SOE counter failure.
Reset IOP. Replace the IOP card if the problem persists.
SRAMFAIL
SRAM failure.
Reset IOP. Replace the IOP card if the problem persists.
UM51_WDT
Not applicable
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