22
5.
Connection diagram
5.1
Clock/Data and RS-485 interface
The reader has the interfaces
and
that can be used alternatively. When started
up, the reader automatically identifies the interface that is in use.
To ensure reliable functioning, ensure that a possible extension of the 6 m connecting
cable does not exceed 200 m. A JY(ST)Y 6x2x0.6 mm cable can be used for extension
purposes.
The reader can be used remotely at a distance of max. 1200 m. We recommend
using a Cat 5 connecting cable.
If the reader is the last user on the RS-485 module bus, a distributor with a 120 Ohm
terminating resistor (from D to D*) must be installed in front of the reader.
For further information, refer to the description of the corresponding central control
unit.
clock/data
RS-485
Clock/Data:
RS-485:
A plug has been soldered to the cable of the reader at the factory especially for test and
premounting sets. For the final installation, it usually has to be cut off.
5.2
Synchronization
In order to prevent densely packed readers from affecting one another, they must be connected to
one another via the "Synchronization" line (black). Up to 4 readers can be synchronized in this
manner.
Synchronization is required at a distance of
(approximate value).
The transponder that is identified first has priority during the read process. The other readers
involved are inactive. After a period of 5 sec. they are reactivated.
£
1 m
sw
sw
sw
max. 4
Leitung für Synchronisation
Reader 1
Reader 1
Reader 1
F
i
2
3
6
5
4
7
8
9
3
0
r
1
680
W
(see below)
Synchronization
Attention:
Do not confuse the data
lines A and B, otherwise the
device will not function!
red
blue
yellow
white
black
violet
red/blue
green
brown
pink
grey
grey/pink
(free)
Enable RS-485
LED green
LED yellow
LED red
Shield
+U_b (9 V bis 30 V DC)
0 V
A (D)
B (D*)
RS-485
CLK (D1)
DATA (D0)
Concerns
If the
interface is used, connect a
resistor from "+U_b" (red) to "LED yellow"
(brown).
Clock/Data
680
W
ACS-1, ACT, ACS-2, ACS-2 plus and ACS-8:
Mounting and Operating Instructions - proX2-reader "Accentic" with keypad
