Rockwell Automation T80020 Application Note Diagnostic Procedures - Manual (Page 56)

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AN-T80020 Diagnostics Procedure
Issue 12 Feb 11 AN-T80020 56
OFIU_CMD_RESP_ERR
0x606n
Modules:Output
Subcode:
8471, 8442: n = output group 0 to
3
8472: n = quadrant (0 to 3)
Others: n = output group 0 to 4
For all:n = 0xF for HOIU RAM
fault Detects a fault in the safety-critical command path. This is usually
caused by a discrepancy in the MP command to each HIU slice or a
fault in the circuits involved in passing the output commands. Swap the
module and try in another slot (it usually clears after a restart). If there
are still similar (communications) faults, return the module for repair.
Action:Slice OFFLINE
OFIU_STUCK_OFF_FAULT
0x607n
Modules:8472
Subcode:
8472: n = channel (0 to F) The DSP declares a STUCK_OFF fault if a channel is commanded ON
and the channel state = OFF. Detects a double fault condition whereby
there is insufficient load voltage when the channel is commanded ON
(based on the no-load threshold NLTHRESH). This could be caused
by a combination of open MOSFETs and/or stuck drive signals. It may
also be caused by incorrect current measurements caused by noise.
If the fault is persistent, return the module for repair.
Action:Slice fault
OFIU_STUCK_X_FAULT
0x608n
Modules:8472
Subcode:
8472: n = channel (0 to F) The DSP declares a STUCK_X fault if the channel state is not a
conclusive ON or OFF state. Detects multiple faults in the SMON
resistor network and/or MOSFET switches. Return the module for
repair.
Action:Slice fault
Batches of all possible 0x609n, An, Bn and Cn faults have been seen in 8472s with many 58nn faults;
these may be the by-products of manufacturing problems. Return the module for repair.
OFIU_LINK_DSCRP_CMD_TST
0x609n
Modules:8472, 8442
Subcode: n = quadrant (0 to 3) Detects latent faults in the Field Interface Adapter (FIA) command voter
logic and discrepancy detection logic. These faults are likely to be
internal to the FIA unless accompanied by 0x60Bn.
If a single fault code is persistent, return the module for repair.
If faults are raised on all quadrants, it may be caused by a dead slice. If
there is not a slice offline, return the module for repair.
Action:Slice fault
OFIU_ LINK_DSCRP_CFG_TST
0x60An
Modules:8472, 8442
Subcode: n = quadrant (0 to 3) Detects latent faults in the FIA config clock and data voter logic and
discrepancy detection logic. These faults are likely to be external to the
FIA.
If a single fault code is persistent, return the module for repair.
If faults are raised on all quadrants, it may be caused by a dead slice. If
there is not a slice offline, return the module for repair.
Action:Slice fault