Honeywell HPM, Service

Page: 152 / 498

2 Equipment Description
2.27 EUCN Cable System
152 HPM High-Performance Process Manager Service R688
Honeywell December 2020
Table 18 UCN Node (PM/APM/HPM) Cable Faults (Primary NIM node is an ENB)
Error scenario UCN COMM STATUS UCN CABLE
STATUS/FTE
CABLE STATUS
$FTESTS2
displays
(PM/APM/HPM
with cable faults)
$FTESTS2
displays
(all other
EUCN nodes)
No UCN coaxial
cable problems A
SIL
B
SIL
A
NSY
B
NSY
OK/OK
UCN: OK/BACKUP
LCN: OK/BACKUP
N/A N/A
If UCN cable A
on a
PM/APM/HPM
node has a
problem
A
SIL
B
SIL
A
NSY
B
NSY
FAIL/OK
UCN: OK/BACKUP
LCN: OK/BACKUP
N/A N/A
*
If UCN cable B
on a
PM/APM/HPM
node has a
problem
A
SIL
B
SIL
A
NSY
B
NSY
FAIL/OK
UCN: OK/BACKUP
LCN: OK/BACKUP
N/A N/A
*
If both UCN cable
A and B on a
PM/APM/HPM
node have a
problem
Primary fails,
Secondary takes
over as the
primary
A
SIL
B
SIL
A
NSY
B
NSY
OK/OK
UCN:
PARTFAIL/OFFNET
LCN: OK/BACKUP
N/A N/A
*
[1]
*
[1]
Note: PM/APM/HPM are UCN nodes and hence the $FTESTS displays are not applicable.
[1]
Note: The A SIL, B SIL, A NSY, and B NSY indications only appear for an instant and then shows
blank due to node failure.
Note: If any SIL or NSY bits are set, then the corresponding cables are backlit on the UCN Status
Display, if the UCN CABLE STATUS target is chosen.