User's Manual

Connecting the RS232 Communication Line
2-2 Reader RD21 Installation and Connections
Connecting the RS232 Communication Line
The RS232 data transmission line is used for point-to-point communication with a local PC. This
connection can be used during the RFID System S21 configuration or troubleshooting. The RS232
connector and the selection jumper are located on the Motherboard MBD21. The MBD21 is the
bottom board of the Reader Module Assembly.
Note For the RS232 line, use specially designed cables only
, such as, BELDEN type 8102, or a standard
PC cable used for RS232 interconnections. For more information, see the RFID System S21
Technical Guide.
To connect the RS-232 communication line to the Reader, refer to Figure 2-1 and.
Figure 2-1: Connections and Jumper Settings for the RS232 - PC Communication Line
Complete the following steps:
1. Unplug terminal block TB8 from connector TB7.
2. Connect the communication wires TX, GND and RX to the corresponding TB8 pins. The TB7
connector pins are marked TX and RX from the Component side.
3. Place the jumper P3 between pins 1-2 of J3 (RS232 position).
4. Plug terminal block TB8 back into connector TB7.
Interface
Selection
J3
RS485
RS232
TX RX
GND
RESET
CNO COM CNC
A B Z Y
A B Z Y
+ - OS I/0
+ 8V D TA PW R
J1
Load
Open
J2
Load
Open
DATA
POWER
Controller CTL21
J2
S95
S21
J3
J1
Load
Open
Load
Open
TB8
P3