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6.10
Antipassback function
This function is implemented since the FW version 5.0.
The Antipassback function is defined in two ways:
•
Time APB
– user cannot repeatedly use his ID for defined time
•
Zone APB
– user cannot repeatedly enter an area, where he is already present
The Antipassback function is used
only for the users
, whose access is driven by a
time
schedule
. The users with access always granted are not affected by the Antipassback
function.
The Antipassback flags for an
ID
can be
reset
by
inserting the ID again
with use of the
programming cards
(offline solution).
All Antipassback flags
are also
reset
whenever new
access rights data are downloaded
from the program.
Both Zone and Time Antipassback flags are written either immediately
after an ID is read
, or
after relevant
door is opened
(relevant input is disconnected).
6.10.1 Time Antipassback
The
Time
Antipassback
is defined by the
ABP
timer
initial
value
(in minutes), which is set to
the ID after passing at the reader module. If the users uses the ID at the address during the
timer for the ID is running, the Time APB alarm is raised. Following parameters affect the
Time APB function:
•
APB timer initial value
– defines the Time APB flag (timer) value set to the ID after
passing at the reader module. If a user uses the ID again before the timer elapses, Time
APB alarm is raised.
•
Open door after APB time alarm
– if the option is enabled, the Door open function is
performed after the Time APB alarm is raised.
6.10.2 Zone Antipassback
The
Zone Antipassback
is defined by
enabling the option
for the relevant address. The Zone
APB flag is set for the ID when passing at the reader module. If a user uses the ID again
when the Zone APB flag is set, the Zone APB alarm is raised. Following parameters affect
the Zone APB function:
•
Enabled
– enable/disable general Zone APB flag setting.
•
Enable in offline mode
– if the option is not set, the module operates in offline mode like
if the APB function was not implemented.
•
Open door after APB Zone alarm
– if the option is enabled, the Door open function is
performed after the Zone APB alarm is raised.
