ID-E270-011GB
79
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alarm occurrences;
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technical alarms;
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faults;
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entering the configuration option and exit;
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tests;
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disabled elements;
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actuation of executive devices;
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personnel reactions: ACKNOWLEDGEMENT, RESET, delay actuation, etc.
The event memory contents may be viewed on the display or printed out (see the counter manual in
the programming manual [PM]).
Note:
Loading the standard configuration results in clearing the event memory.
8.5.2 Alarm memory
The control panel may store up to 9,999 latest alarms in its non-volatile memory together with the
date, time (accuracy up to 1 second) and zone of their occurrence. Moreover, if the control panel
operates in a network, the unit number is also stored.
The alarm memory contents may be viewed on the display or printed out (see the counter manual in
the programming manual [PM]).
Note:
The alarm memory may be cleared only from the control panel menu (4
th
access level authorisation
necessary). Loading the standard configuration does not result in clearing the alarm memory.
9 CONTROL PANEL NETWORK OPERATION
The POLON 4000 system control panels may be connected with one another by means of a double
pair of wires (or a pair of optical fibre cables) in a form of a ring in order to create a network of
control panels. The double ring of connections among control panels prevents from the network
system fault in case any transmission path is faulty (redundancy).
Up to 31 control panels equipped with the MSI-48 module may operate in a network. All units should
be equipped with identical software versions. Each control panel should have an individually
programmed number from the 1 ÷31 range (local control panel number) and the numbers must not
repeat. A control panel number is declared within software and additionally set within hardware on
the MSI-48 module keys. The compliance between the declaration and hardware setting is checked.
The number set within hardware is used by the MSI-48 module in case the I2C connectivity with the
PSC-49 module is interrupted. A standalone control panel (outside the network) must be
programmed as No. 0 (the MSI-48 must be disconnected and not declared). The network should
include a control panel programmed with no. 1 – MASTER. The MASTER control panel makes it
possible to program the system configuration, i.e. the set of numbers of control panels belonging to
the network elements, i.e. SLAVE control panels. The MASTER panel transmits the system
configuration to the SLAVE panels and monitors the network. In the event of the MASTER control
panel fault, the next control panel in the sequence takes its role over.
Every network control panel makes it possible to declare a group of control panels which co-operate
with it in order to create this control panel common detection zone. The network control panel, in
which other (remote) panels are declared for co-operation, works as a collective control panel.
This function is not symmetrical, i.e. if control panel B is within the common detection area of control
panel A, control panel A is not required to be included in the common detection area of control panel
B. In particular, this function allows creating zones in which the differentiated control panel enables
