Honeywell HPM

2 Equipment Description
2.27 EUCN Cable System
R688 HPM High-Performance Process Manager Service 149
December 2020 Honeywell
Table 16 ENB Cable Faults
Error scenario
UCN COMM STATUS
UCN CABLE
STATUS/FTE
CABLE STATUS
$FTESTS2
displays
(ENB with cable
faults)
$FTESTS2
displays
(all other
EUCN nodes)
No FTE cable
problems
A
SIL
B
SIL
A
NSY
B
NSY
OK/OK
UCN:
OK/BACKUP
LCN: OK/BACKUP
FTE composite status
A->A
A->B
B->A
B->B
OK
OK
OK
OK
If FTE cable A on
a Primary ENB
node has a
problem
A
SIL
B
SIL
A
NSY
B
NSY
FAIL/FAIL
UCN:
OK/BACKUP
LCN: OK/BACKUP
*
FTE composite status
A->A
A->B
B->A
B->B
SIL
SIL
SIL
OK
If FTE cable B on
a Primary ENB
node has a
problem
A
SIL
B
SIL
A
NSY
B
NSY
FAIL/FAIL
UCN:
OK/BACKUP
LCN: OK/BACKUP
*
FTE composite status
A->A
A->B
B->A
B->B
OK
SIL
SIL
SIL
If both FTE cable
A and FTE cable
B on a primary
ENB have a
problem
Primary fails,
Secondary takes
over as the
primary
A
SIL
B
SIL
A
NSY
B
NSY
OK/OK
UCN:
OFFNET/OK
LCN:
FAIL/WARNING
*
[1]
*
[1]
FTE composite status
A->A
A->B
B->A
B->B
OK
OK
OK
OK
If both FTE cable
A and FTE cable
B on a secondary
ENB have a
problem
A
SIL
B
SIL
A
NSY
B
NSY
FAIL/OK
UCN:
OK/BACKUP
LCN: OK/SEVERE
*
*
FTE composite status
A->A
A->A
A->A
B->B
OK
OK
OK
OK