FireClass FC32-1 - Open or Short Circuit - Right Port; Network Ground Fault Diagnosis; Network Card Data Transfer Faults; Ring Continuity Faults

FIRECLASS Fire Alarm Control Panels 4.4 Open or Short Circuit – Right
Fault Finding Guide Doc. version 2 19
“Net Card Left”, there is an open or short circuit from
panel 3 to the adjacent panel.
This applies to open circuit on FOM800 connections.
Action:
 If the network is wired as a Bus, the end nodes need
to be set in Express and SW1-6 needs to be set ON.
4.4 Open or Short Circuit –
Right

“Net Card Right”, there is an open or short circuit from
panel 2 to the adjacent panel.
This applies to open circuit on FOM800 connections.
Action:
 If the network is wired as a Bus, the end nodes need
to be set in Express and SW1-6 needs to be set ON.
4.5 Network Ground Fault

‘Net Card Ground’, earth fault on the TLI800EN con-
nected to panel 1.
4.6 Network Card Data
Transfer Fault

Data transfer fault from panel 5.
Failures could be
 Failure to obtain a correct network acknowledge-
ment to transmitted data, e.g. network supervision
reply.
 Network data is being received with incorrect
sequence numbers, indicating data is being lost.
Broadcast messages use sequence numbers.
 Corrupt packet detected inside TLI800EN buffer,
data is being lost.
Actions:
 Check all network cards use the same configuration
settings.
 Check all nodes are online
 Check for any ground faults.
4.7 Ring Continuity

Panel 1 is not receiving the packets it sent out.
It is expected that the network is wired as a ring and
data sent one direction is received back at the network
card from the other direction.
Transmissions from this TLI800EN are failing to return
(echo not received).
This fault is not enabled on networks with bus topology.
Action:
 In Network Bus topologies (SW1-6 = ON) this fault
is automatically disabled.
4.8 Net Card Comms Fail

Comms fault reported from the TLI800EN to panel 1.
Causes:
 The link between Emergency CPU and Main CPU if
Emergency CPU Fault LED = ON
 The link between Emergency CPU and Emergency
Display if used (SW2-2 = ON)
 The link between Main CPU and local panel (Fault
Report used in the absence of other traffic to retry
serial communications)
Action:
 Check the connection to the TLI800EN card.