User's Manual

Table Of Contents
Connecting the RS-485 Four-Wire Communication Line
Reader R95 Installation and Connections 2-5
To connect the RS-485 communication lines to the Reader, refer to Figure 2-3 below.
Figure 2-3: Connections and Jumper Settings for the RS-485 Four-Wire Communication Line
Complete the following steps:
1. Unplug terminal blocks TB4 and TB6 from connectors TB3 and TB5 respectively.
2. Run the RS-485 incoming and outcoming cables through the cable grips into
Readers enclosure.
3. Connect the four-wire communication line to the corresponding pins A, B, Z and Y
on terminal block TB4 (or TB6). Connect the cable shield to the pin indicated by
the ground symbol on terminal block TB4 (or TB6).
Caution Before installing the RFID System, label the 4 wires on the RS-485 line A, B, Z and Y.
Keep this naming convention for all connections made on this RS-485 communication
line.
4. Place jumpers P3 between pins 1-2 of J3 and P4 between pins 2-3 of J4 to set a
full-duplex multipoint communication mode on the RS-485 interface.
Note For a full-duplex point-to-point communication mode set, however, you have to place
the jumper P4 between pins 1-2 of J4.
5. Set the RS-485 communication line terminating load. The ends of a multidrop
network line can be easily identified, because only one RS-485 cable is connected
to that equipment. To connect a 120 ohm terminating load, place the jumper P1
between pins 1-2 of J1. For any other equipment connected to this RS-485
communication line, place the jumper P1 between pins 2-3 of J1.
Outcoming cable
Incoming cable
M
a
t
h
e
r
b
o
a
r
d
M
B
D
9
5
Controller CTL95
AB ZY
AB ZY
TB6
TB4
RS485
RS485
AB ZY
AB ZY
P4
1
J4
J3
P3
1
J4
P4
1
Standard Configuration - 4 wires
1
J
2
1
J
1
RS485 Termination
Load
Open
P
2
RS232
RS4852
Interface
Selection
R
S
4
8
5
I
n
t
e
r
f
a
c
e
T
y
p
e
S
e
l
e
c
t
i
o
n
NOTE:
J4 Setting for
point-to-point
application