Functional description of PRxx1 series controllers Rev.H.doc
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2.7.13 Option: Constant activation of Output 1 by card in vicinity of reader
When the option is checked then Output 1 (REL1) is active (associated door is opened) as long as
authorized proximity card is in vicinity of the controller with built in reader. If the card is removed
then the Output 1 is released with delay specified by Door Unlock Time.
2.7.14 Anti-passback (APB)
When anti-passback function is active then user can log either on entry or exit reader however
every next time he must login on opposite side of the given door. Following types of anti-passbacks
are available:
Soft anti-passback (Soft APB)
Hard anti-passback (Hard APB)
When Soft APB is selected controller grants access despite of violation of APB rule but such
violation is reported in the system. When Hard APB is selected then violation of APB rule will cause
rejection of access at that controller for particular user (two long acoustic signals) and such event
will be reported within system.
Option: True APB
When option True APB is active controller assumes that user entered/left only if door opening is
detected. If access is granted but the door opening is not detected then anti-passback status
remains unchanged. True APB requires installation of door contact to monitor actual door opening.
APB Reset Time
Two times per day, APB Register can be cleared and set to default values. In such case all users
logged at particular controller acquire Not logged status. This functionality is available only for
Network Systems (see 2.1.2 Network System (with CPR32-SE).
Note: Once the APB Register is cleared all users have Not logged status and initially they can login
either at entry or exit side of the door. After that they must log alternately.
2.7.15 Anti-passback Zones (APB Zones)
An APB Zone is a selected access controlled area with multiple access points (readers). APB Zones
incorporate a list of entry readers as well as exit readers. A PRxx1 controller is capable of
monitoring only one 2-way passage. Therefore, it needs to be located at a border between 2 APB
Zones, where one reader connected to controller monitors the entry to particular APB zone and the
other one, monitors the exit from that zone. It is not allowed for readers connected to the same
controller to control one entrance to one APB Zone.
Note: A PRxx1 controller located at the APB Zone border is not required to feature two readers. APB
zone entrance and exit can be controlled by two access controllers, respectively.
Every RACS4 access control system incorporates predefined Public APB Zone. The public zone is
defined as an area surrounding the access system. Assuming an access control system to be
located in a building, every user leaving it enters the public zone and vice versa.
Note: In RACS4 system, controllers defining particular APB zone must be incorporated in one
Network. APB Zone cannot be defined by means of controllers from various access Networks.
APB Register
The APB Register is located in controller memory and it keeps information about the latest logging
of each user (ID0 or ID1 terminal). Following records are assigned in APB Register to all users:
