Diagnostic Display Analysis Example; Detailed Diagnostic Display Switch; Debug Connector - Honeywell HPM Service

2 Equipment Description
2.6 EHPM Card Files
four octets of the IP Address of the node. The additional diagnostic codes are presented in a fixed
sequence.
ATTENTION
If a running EHPM fails in such a way that the status indicator (front-panel
LED on the EHPM Comm/Ctrl card) is shown as all black, you should recover
by performing a RAM RENTENTION RESTART to maintain the error code
indication for the purposes of diagnosing the potential issue. If you perform a
full power recycle, you will lose the error code indication.

Diagnostic display analysis example

A diagnostic code of AL09 is analyzed as follows:
First character = A = The HPMM is in the Alive state.
Second character = L = The card file is a left 7-Slot file.
Possible characters are:
Third and Fourth characters = 09 = The pinned UCN node number
Refer to subsection "Redundant Analog Output IOP Failure Diagnosis" in "Fault Isolation" for additional
Diagnostic display codes and more detailed information.

Detailed Diagnostic display switch

A pushbutton switch (Display) under the front cover of the Enhanced High-Performance Comm/Control
card controls additional detailed diagnostic information displays. The additional diagnostic codes are
presented in a fixed sequence.
This detailed diagnostic information becomes extremely useful when troubleshooting.
The switch effects only the behavior of the display and does not effect the operational capability of the
Enhanced High-Performance Comm/Control card.
Refer to the "Fault Isolation" section for troubleshooting information, failure code charts including
suggested corrective actions, and additional information on detailed diagnostic displays and the
sequences of presentation.

Debug connector

The Enhanced High-Performance Comm/Control card has a debug connector (Debug) under the front
cover. The connector is used by Honeywell engineering with specialized equipment and design level
knowledge.
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Possible first characters are:
A = Alive
B = Backup
I = Idle
F = Fail
L = Load
T = Test
L = Left 7-slot HPMM card file
R = Right 7-slot HPMM card file
1 = First 15-slot HPMM card file
2 = Second 15-slot HPMM card file
HPM High-Performance Process Manager Service
Honeywell
R688
December 2020