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ViewSonic CDE4200-L User Manual

ViewSonic CDE4200-L
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Other Information
29
RS232 Protocol
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 specification
Viewsonic communication port in the rear side
(1) Connector type: DSUB 9 Pin Male
(2) Pin Assignment
2.2 Communication Setting
Baud Rate Select: 9600bps (fixed)
Data bits: 8bits (fixed)
Parity: None (fixed)
Stop Bits: 1 (fixed)
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)
Pin # Signal Remark
1 NC
2 RXD Input to Monitor
3 TXD Output from 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.
123 4
5
6 789
Male DSUB 9Pin
(outside view)

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ViewSonic CDE4200-L Specifications

General IconGeneral
BrandViewSonic
ModelCDE4200-L
CategoryMonitor
LanguageEnglish

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