6 Fault Finding Guide Doc. version 2
2.1 FIM Pseudo Points FIRECLASS Fire Alarm Control Panels
27 MP ROM Fail The firmware checks its own checksum regularly. If it is different to the
values stored within the firmware chip, this fault is raised.
The firmware then places itself into a 'safe state'. This involves restart-
ing in a 'locked' state. It is not deemed safe to use firmware known to
be corrupt.
28 MP System RAM The panel regularly checks each byte of RAM with fixed sequences to
check that each bit can be written to and read independently.
If a fault is detected, it is raised and the system is placed into the 'safe
state' as described above.
29 MP Clock This point is not used for fault reporting. It is used in the process of
changing the current time within the panel.
30 Not used
31 Battery Low If the battery is present but the reported voltage has dropped below a
threshold value, this point is activated.
The fault is cleared once the voltage is greater than the threshold.
32 RBus Circuit Fault The Remote Bus (RBus) connections on the FIM are split between RBus
0 and non-zero nodes.
If faults are detected on all nodes other than zero, a relay on the FIM is
tripped to isolate (protect) RBus 0 communications. If this happens, this
point is activated.
The relay is put to its normal state only on Fire Reset.
33 Stack Overflow If the firmware monitoring process discovers that one or more of the
task stacks is near the full condition, the fault point is activated.
This fault is not cleared.
34 System Heap Error If the area of RAM within the panel that is used for system 'heap' is
found to be corrupt, this point is activated.
The point is not cleared.
35 Not used
36 FCRemote Con-
nected
The point is set when FIRECLASS Remote (the Remote User Interface)
starts communication and is cleared when communication ends. This
point is only set while FIRECLASS Remote is in communication with the
panel.
37–39 Not used
40 Local I/O F/W The compatibility between the firmware on the FIM Local I/O chip and
the main firmware is checked. If they are not compatible, the fault is
raised.
41 Panel Incompatible This fault is raised if the panel hardware is a restricted low- end model,
but the configuration is for a full product.
Exact panel types are not checked.
42 Not used
43 Walktest Sounders Sounders are walk-tested using standard point commands as directed
from the User Interface.
This point is sent at the beginning of a walk test and cleared at the end
of it. This is to place events in the event log.
Point
Address
Label Use
Table 1: FIM Local I/O Pseudo Points (cont.)
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