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8
IDS control function
The special function of the reader is a
simple IDS control
with a use of a
WIO 22 relay module
.
The function description follows.
8.1 IDS connection
The
IDS control function
is performed by the
second relay
of the
WIO 22 relay module
, which
is connected to the reader module using the
WIEGAND interface
(the first relay of the WIO
22 module still copies the status of the reader module door lock relay).
The IDS can be controlled either by the
status
of the IDS control relay, or by an
impulse
of
the IDS control relay. The width of the impulse is configurable (see
chapter 6.7.3
). The
function of the IDS control relay is described in
table 15
.
Rel
ay
Status control
Relay active
Disarm IDS
Relay inactive
Arm IDS
Impulse control
Relay active impulse
Switch IDS status (armed / disarmed)
Table 15: IDS control relay function
The IDS status is indicated by the third LED of the MREP 78 reader module (located on the
right). In the status control mode the indication is based only on the control relay status, in
the impulse control mode it is given by the I/O Port status. The meaning of the LED color and
the logic of IDS signal at the I/O Port are described in
tables 16 and 17
:
LE
D
D3
Green
Indicating IDS disarmed status
Red
Indicating IDS armed status
Yellow
Indicating IDS arming / disarming status
Table 16: IDS status indicated at the reader module
I/O
P
ort
0 V (GND) signal from the IDS connected to the I/O Port
IDS armed
Other signal (or I/O Port not used) from IDS
IDS disarmed
Table 17: Logic of the IDS signal at the I/O Port
Proper connection of the reader module I/O Port with the IDS status signal is required for
the correct function in the impulse control mode!
8.2 IDS operation
8.2.1 IDS disarmed
If the
IDS is disarmed
(indicated by the LED indicator
–
green color
), a standard door open
function is performed after a valid identification.
To arm the IDS
, the
#
(hash) key must be
pressed
before identification
. The action of the reader and connected WIO 22 relay module
depends on the IDS control mode:
•
Status control mode
– the control relay is switched off to arm the IDS and the IDS status
LED indicator turns red.
