PR311-BK fv102 Rev B. ENG.doc.DOC
8/9/2006
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Door Release or Door Lock
The electric device which unlocks a door. Typically it can be a door strike or a
magnetic lock.
Communication Bus
The physical medium used for exchanging of data between various devices
connected to it. The PR311-BK is equipped with two types of communication buses:
the RS485 interface and the
Clock & Data
.
System Flags
Flags are logical registers which exists in controller’s memory. Each flag represents
a status of relevant situation which may occur in the controller (e.g. TROUBLE
flags, DURESS flags).
Timer
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 witch is used by the controller for communication with PC
and/or with CPR host controller. Usually, the PC’s are not equipped with RS485
communication port, so the special adaptor (UT-2 interface) is required. The RS485
enables communication for up to 1200 meters.
Clock & Data Interface
The electrical interface which is used by the controller for communication with
various equipments connected to it. The PR311-BK 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).
XM-2 I/O Extension Module
The remote I/O extension module for RACS system which can be connected to
PR311-BK controller via
Clock & Data
lines. The XM-2 provides two NO/NC inputs
and two relay type outputs.
PRT Series Readers
The PRT reader’s family developed and manufactured by the Roger. Each member
of PRT series readers can be connected to PR311-BK access controller via
Clock &
Data
interface. Typically the additional remote reader is used for two-way door
control.
Identification Point
The electronic equipment (usually reader) used for user identification.
Access Group
The electronic equipment (usually reader) used for user identification.
Programming Cards
The proximity card or tag which has been assigned some programming functions.
