2 G LOSSARY AND T ERMS
Identifier
The method or means which is used to identify a person. It can be a proximity car, a PIN code, a finger
template etc. In some cases Identifier may consist of two or more of item required for a single identification
procedure. For example when the option [Card and PIN] is active then Identifier=Card+PIN.
Stand-alone Mode
The situation when device operate without physical connection to any Host device or when such connection
exists but it is used only for uploading/downloading of data to/from a unit.
Integrated Access Control System (IACS)
The access control system which consists of one or more access controllers connected to a communication
medium and managed from a Host device. The Host device plays a special role in such systems while adding
some functionality to them. Without the Host device the functionality of a system deteriorates partly or
completely.
Networked Access System
Same meanings as Integrated Access System.
Roger Access Control System (RACS)
The access control system which consists of PR series access controllers developed and manufactured by the
Roger.
Host Device
The electronic equipment which is used to expand functionality of the access system. In the RACS system a
Host unit can be the CPR32SE host controller or the PC with special software which is used for online control of
the access system.
Door Mode
The method which is used to control door release device. The PR311 offers: Normal, Unlocked, Locked and
Conditional Unlocked door modes.
Identification Mode
The method which is used for identification of users. The PR311 offers: Card and PIN, Card or PIN, Card only
and PIN only identification modes.
Facility Code
The common part of card codes which characterize all cards used in the particular access system.
Door Release or Door Lock
The electric device which is used to enable access to the controlled room or area. Typically it can be a door
strike or a magnetic lock.
Communication bus
The physical medium which is used for exchange of data between various devices connected to it. The PR311 is
equipped with two types of communication buses: the RS485 interface and the Clock & Data.
System Flags
Flags are logical registers which exist in controller’s memory. Each Flag represents a status of relevant situation
which may occur in controller.
Timers
The function which automatically clears condition of some item (physical or virtual) after predefined time. The
Timer function can refer to various elements of controller logic e.g. to outputs, time delays etc.
Latch Mode
Latch mode refers to situation when some element (e.g. output) changes its condition for unlimited time – till
the moment when some other event will restore previous condition of given element.
RS485
The electrical interface which is used by controller for communication with PC managing software and/or Host
device (when operating in Integrated Access Control System). Communication with PC requires special
communication converter. Actually Roger offers two converters for such purpose: UT-2 (RS232-RS485) and UT-
4 (TCP-RS485).
Clock & Data Interface
The electrical interface which is used by controller for communication with various equipment connected to it.
The PR311 can operate with second PRT series reader and/or XM-2 extension module. Both device can be
connected to the same Clock and Data lines and must have individual addresses (ID numbers).
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