PR821-CH User Manual.doc
2018-04-05
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6.4 System Flags and timers
System Flags are logic states in a controller's memory corresponding to certain conditions/events
related to controller. Some of the flags are predefined for particular purposes (LIGHT, TAMPER,
INTRUDER) whereas other are fairly universal and can be used for administrator defined purposes
(AUX1, AUX2).
Initially, every flag is switched off. Flags can only be switched on upon certain system
events/conditions. Flag returns to off state when preset time interval elapses (timer) or when
specific event occurs. Some of the flag timers can be set into a bi-state type mode (latch mode) –
in this mode flag state changes permanently till occurrence of particular event. Flag state can be
signalled at controller’s output if adequate function is assigned to the output.
Timers which specify activation time for certain flags can be configured for every controller in its
properties in the tab
Timers
(see fig. 8) whereas flag states are displayed in the window which
can be opened by right clicking of particular controller and selecting
Controller flags
(see fig.
9). Some of the flags can be switched manually with toggle button. All flags displayed in Controller
flags window are presented in table 5.
Fig. 8 PR821-CH timers
