Cable Troubleshooting Guidelines For Eucn - Honeywell HPM Service

Cable troubleshooting guidelines for EUCN

This section shows how the UCN cable faults and FTE cable faults are reported on the UCN Status
Display and $FTESTS displays for EHPM/ENIM/ENB.
Troubleshooting a EUCN or hybrid (UCN/EUCN) cable error begins with the UCN Status Display.
Beginning with TPN R686, a new FTE CABLE STATUS field has been added for both ENIM and ENB
nodes (this field is not available for NIMs). The UCN CABLE STATUS reflects all cable related failures
including both UCN and FTE cable faults. This composite UCN and FTE status is required to generate
cable related system events, and alert users with an alarm via the existing system alarm mechanism.
For an ENB, if only the UCN CABLE STATUS is in the FAIL state, then it is an UCN coaxial cable
fault. Also, a disjoined node (for example, a double FTE cable fault) will still be shown in the "FAIL"
(meaning X X X X) state on the $FTESTS2 schematic but will no longer contribute to the overall
composite FTE community status. In case of a disjoined node (for example, a double FTE cable fault),
the EUCN node would transition to the OFFNET state on the UCN Status Display. For both ENIM and
ENB, if there are UCN cable faults and FTE cable faults, then first eliminate FTE cable faults.
Select the UCN CABLE STATUS line's value to invoke the $FTESTS1 display (filtered by the UCN
Node Number) and FTE CABLE STATUS line's value to invoke the $FTESTS2 display (which is
indexed by the FTE Device Index).
Reminder: In the case of an UCN Cable Fault, the HM Journal indicates "SILENCEA" (or SILENCEB).
The SILENCEA or SILENCEB is marked against the UCN node.
UCN Cable Fault
Note: Beginning with TPN R686, the HM Journal will now indicate FTE cable faults as "SIL_FTEA"
and "SIL_FTEB" always against Node 00 for the specific EUCN Network Number.
In the case of a node in the FTE community (for example, an ES-T node), the HM Journal indicates only
SIL_FTEA (or SIL_FTEB), which is marked always against Node 00 for the specific EUCN Network
Number.
FTE Cable Fault
In the case of a FTE Cable Fault for a EUCN node, the HM Journal indicates both SILENCEA (or
SILENCEB) and SIL_FTEA (or SIL_FTEB). The SILENCEA (or SILENCEB) is marked against the
EUCN node, and the SIL_FTEA (or SIL_FTEB) is marked against Node 00.
FTE Cable Fault
for a EUCN node
This section describes specific failure scenarios and the methods used in diagnosing the fault. All
scenarios will assume the network topology as described in the following section in Figure 70.
System network topology
This section describes an ENB connected hybrid EUCN/UCN network as an example. The following
figure depicts the network topology of the system being discussed. Although the ENB network topology
is shown, the same troubleshooting techniques also apply to ENIM (FTE-only) systems.
For simplicity, it is assumed that ENIM/ENB is connected to a L1 switch. All EHPMs are connected to
CF9s. L1 switches including CF9s are connected to L2 Switches. The L2 Switches are at the top of the
FTE network and are connected by a crossover Ethernet cable. An ES-T is connected to L2 and is
displaying an FTE Status display on the Native Window. The Native Window displays the status of the
UCN as viewed by the ENIM/ENB pair.
R688
December 2020
UCN 03 ND 25 FILE_1
UCN 03 ND 00 FILE_1
UCN 03 ND 25 FILE_1
UCN 03 ND 00 FILE_1
HPM High-Performance Process Manager Service
Honeywell
OK HPMM OK FULL
OK HPMM OK FULL
OK HPMM OK FULL
OK HPMM OK FULL
2 Equipment Description
2.27 EUCN Cable System
UCNCBLEV SILENCEA
UCNCBLEV SIL_FTEA
UCNCBLEV SILENCEA
UCNCBLEV SIL_FTEA
147