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Terms
Access point
Access point is a logical concept of the access control system implying control of
passing through a door in one direction. It consists of reader, access control panel
(or its part), door supervision devices (like magnetic sensor, RTE etc.) and door
locking device. For instance, the turnstile with two way passes has two Access
points – one for entrance and the other one for exit, door of this type is called
double-sided door. A door with a reader on one side has only one Access point –
Entry point, and it is called single-sided door.
Antipassback
Antipassback function is implemented in DLK642 access control panel in order to
prevent the situation when user gives his ID to another person after passing into
the premises. If this function is on, DLK642 tracks an ID position – Inside or
Outside the premises. On any attempt to pass in the same direction twice
DLK642 denies access and stores “Access Denied, Antipassback” event into the
Log.
Antipassback function can be set on only in case of the double-sided door control.
Code matching
DLK642 can activate alarm on attempt of a code (or ID) matching. Code matching
is considered when invalid code (or ID) is entered several times succesively. Valid
code entering clears the counter. This function switching on and number of code
entrances are subjects of programming.
Door Contact (DC)
In access control systems various sensors are used to supervise door status
(opened or closed) – magnetic door sensor, sensor of the turnstile rotor position,
inductive sensor of car passing through the road barrier, etc.
Door Contact terminal of DLK642 is intended for connection of these sensors.
Door time
If door sensor is open, corresponding access point goes into alarm. Alarm is not
invoked, if contact is opened during Door Time interval. This interval starts when
access is granted and lasts for the programmed time or terminates on opening
and subsequent closing of door contact.
Downloading
DLK642 is to be downloaded after all parameters setting – modes of inputs,
outputs, access rights and others on PC. During downloading parameters are
rewritten into access control panel. If you change control panel parameters in
your computer, they will not take effect until this parameters are downloaded to
control panel.
PIN (Personal Identification Number)
Some readers have built-in keypad. Keypad may be used for PIN entering. It can
be both self dependant or used as an additional code to ID. When PIN is pro-
grammed as additional code, DLK642 waits for PIN entering after ID is read-out.
PIN is associated with ID.
Terms
