ViewSonic VTMS2431 Manuel d'utilisateur télécharger pdf (Page 50)

ENGLISH

Contact ViewSonic service team at: http://www.ViewSonic.com or call our service team: United States 1-800-688-6688, Canada 1-866-463-4775

ViewSonic VTMS2431

Other Information

1. Introduction

This document describes the hardware interface spec and software protocols of RS232

interface communication between Viewsonic Commercial Display and PC or other control

unit with RS232 protocol.

The protocol divide into three sections:

• Set-Function

• Get-Function

• Remote control pass-through mode

※

In below document, “PC” will represents all the control units that can sent or receive the

RS232 protocol command.

2. Description

2.1 Hardware specication

Viewsonic LCD communication port in the rear side

(1) Connector type: DSUB 9 Pin Male

(2) Pin Assignment

Male DSUB 9Pin

(outside view)

1 2 3 4 5

6 7 8 9

Pin # Signal Remark

1 NC

2 RXD Input to LCD Monitor

3 TXD Output from LCD Monitor

4 NC

5 GND

6 NC

7 NC

8 NC

9 NC

frame GND

* Use of crossover (null modem) cable required for use

with PC.

2.2 Communication Setting

• Baud Rate Select: 9600bps (xed)

• Data bits: 8bits (xed)

• Parity: None (xed)

• Stop Bits: 1 (xed)

2.3 Command Message Reference

PC sends to Monitor command packet followed by “CR”. Every time PC sends control

command to the Monitor, the Monitor shall response as follows:

1. If the message is receives correctly it will send “+” (02Bh) followed by “CR” (00Dh)

2. If the message is receives incorrectly it will send “-” (02Dh) followed by “CR” (00Dh)

RS232 Protocol

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ViewSonic VTMS2431 Manuel d'utilisateur Page 50

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