4 Fault Isolation
4.3 Fault Isolation Concepts
R688 HPM High-Performance Process Manager Service 309
December 2020 Honeywell
Fault isolation flowchart (Sheet 4 of 6)
Figure 183 HPM Fault Isolation Flowchart (Sheet 4 of 6)
This sheet shows the path for HPMM Soft failures.
display. The HPMM soft failure
descriptions appear on the
display after selecting one of
the three yellow error displays.
Any active soft failure is
highlighted on the display.
descriptions of the error codes
HPM status = IDLESF or SOFTFAIL
00 CTRL RESET/WDT EXPIRED
01 CTRL PROCESSOR FAILURE
02 COMM PROCESSOR LOAD FAILURE
03 ––––––––––––––––––––––––––––––––––
04 COMM PRC DIAG INIT TIMEOUT
05 COMM PRC DIAG CYCLE OVERFLOW
06 GLOBAL RAM PARITY CHECKER FAIL
07 COM DETECT IOL RAM PARITY CKT
08 COMM LOCAL RAM PARITY CIRCUITRY
09 UCN ADDRESS CHANGE DETECTED
10 TRANSIENT POWER DOWN DETECTED
11 COMM DETECTED IOL PERR HI-RATE
12 ––––––––––––––––––––––––––––––––––
13 PRIVATE RAM PARITY CIRCUITRY
14 NO RESPONSE FROM IOL #1
15 IOL MAX COMM ERRS EXCEEDED
18 NO PRIMARY IOL1 COMM TO SECNDY
19 NO PRIMARY UCN COMM TO SECNDY
20 NO SECNDY UCN COMM TO PRIMARY
21 –––––––––––––––––––––––––––––––––
22 ––––––––––––––––––––––––––––––––––
23 PRIM/SECNDY DUPLICATE IOM ADDR
25 TIMESYNC CLOCK ERROR DRIFT
27 TIMESYNC IOL #1 LATCH ERROR
28 TIMESYNC UCN LATCH ERROR
29 COMM PROC STACK LIMIT OVERFLOW
30 COMM DETECTED LRM PERR HI-RATE
31 CTRL DETECTED LRM PERR HI-RATE
32 ––––––––––––––––––––––––––––––––––
35 CTRL POINT PROCESSOR OVERRUNS
36 CTRL PROC DIAG INIT TIMEOUT
37 CTRL PROC DIAG CYCLE OVERFLOW
38 CTRL LOCAL RAM PARITY CIRCUITRY
39 CTRL REDUN DATA TRANSFER ERR
HPMM Soft Failure (0-39) Display
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