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

Reader’s 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

Matherboard MBD95

Controller CTL95

A B Z Y

TB6

TB4

RS485

A B Z Y

Standard Configuration - 4 wires

RS485 Termination

Load

Open

RS232

RS4852

Interface

Selection

RS485 Inte rface

Type Selection

NOTE:

J4 Setting for

point-to-point

appl ic at io n