Instruction Manual

Operation Method

RS485 Communication Function

1. Settings Relating to Communication

1.1 Communication Settings

Before starting communication with the VS3 controller (hereinafter called the "unit"), set

communication parameters on the personal computer.

Item Communication setting

1 Data length 8 bits

2 Stop bit length 2 bits

3 Parity Disabled

4 BCC check Enabled

5 Baud rate 4800BPS

6 Response delay time 0msec

1.2 Communication Connections

■ Personal computer

・Use channel 1 (COM1/COM2 port) of the RS232C interface.

■ RS232C/RS485 converter

・For the converter, System Sacom's KS-485 is recommended.

・Our optional accessory "external communication adapter (RS485-232C) ODK18" permits the

connections described in Note 1) below (except the personal computer). A sample program is

uploaded on our website.

http://www.yamato-net.co.jp/support/program/index.htm

■ Communication cable for connection

VS3 controller

CN3-3,4

RS232C/RS485 converter

KS-485

Cable 2 Cable 1

AC adapter

COM1/COM2

VS3 built-in device

Note)

The optional accessory "external communication adapter (RS485-232C) ODK18" comprises the

following:

① Communication cable 1: One-meter-long RS-232C cable with a connector (for IBM nine-pin

appliance connection) to the personal computer and System Sacom's CBL16 connector (Dsub

25-pin male) to the KS-485

② Communication cable 2: Three-meter-long UL2464TASB two-core AWG20 cable with a connector

(Dsub nine-pin male) to the KDS-485 and a Y-terminal (with a 100W terminating resistor) to the

unit

③ RS-232C <=> KS-485 conversion unit: System Sacom's KS-485 with an AC adapter