ViewSonic VS11857 manual Introduction, Description, Set-Function Listing

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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:

zSet-Function

zGet-Function

zRemote 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

2.1Hardware specification

Viewsonic LCD communication port in the rear side

(1)Connector type: DSUB 9 Pin Male

(2)Pin Assignment

Male DSUB 9Pin

(outside view)

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

2.2Communication Setting

- Baud Rate Select:	9600bps (fixed)
- Data bits:	8bits (fixed)
- Parity:	None (fixed)
- Stop Bits:	1(fixed)

2.3Command 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)

3 Set-Function Listing

The PC can control the LCD Monitor for specific actions. The Set-Function command allows you to control the LCD monitor behavior in a remote sit through the RS232 port. The Set-Function packet format consists of 5 bytes. Note that the “Value” byte is always = 00.

ViewSonic

CD3200

ii

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Contents ViewSonic Contents Customer Support Limited Warranty CE Conformity for European Countries For CanadaFollowing information is only for EU-member states Important Safety Instructions Declaration of RoHS Compliance Copyright Information Product disposal at end of product lifeOperating Safety Safety and PrecautionsViewSonic Repair Point of USE Environmental ConditionsConnecting Power SupplyPrecautions Service Performance CharacteristicsIntroduction Advantages in relation to CRT cathode ray tube displaysFurther features RS232 ProtocalIncluded Equipment Connecting External Devices InterfacePower indicator Controls and LocationTurn The LCD Display On Function KeyRemote Control Summary of Remote Control Buttons Selecting the primary signal sourceConnections & Applications How do I connect a Video device via Hdmi Hdmi ? How do I connect a PC via D-SUB ? How do I connect a video device via general cables? Using Volume Control Using MuteVolume Control Setting the Sleep TimerVideo button PC/HD buttonScart button Viewing the Menus and ON-SCREEN Displays Picture Setting Picture ModesColor Mode Picture SettingsHUE ViewSonic Sound Adjustment OFF modeEqualizer Voice POP Rock Jazz Manual ButtonMulti Mode FunctionViewSonic PIP Function Press the T button to select PIP Function optionSub Main Language PC Menu Brightness Darken and brighten picture brightnessColor Mode Mainpc Suboff Other Functions Troubleshooting Remote control does not workPicture is jittery PC Input Preset Timing Table Analog InputSpecifications Items SpecificationPanel Video InputFeature PowerDimension Audio InputCustomer Support Limited Warranty Table of content ViewSonicDescription IntroductionSet-Function Listing Length Command Value1 Value2 Value3 Length CommandExample Set Mute-ON command Ascii Set-Function descriptionPC Set-function command to LCD Monitor ID=C0h Command Value Range CommentsSet Function Code HexUpright Downleft Down Right Get-Function description Get-Function ListingByte Count 00D Bytes order Get Function PC Get-function command to LCD MonitorResponse Range Comments CD3200 Viii MSB LSB Remote Control Pass-through modeName Length RCU-Code1 RCU-Code2 Byte Count 00D Bytes order Baseline RCU Pass-through codes HEXCD3200 RS-232 Command Table Set Function Command Value Range CommentsASPECT/EXIT See TableCD3200 Xiii CD3200 Xiv Pass Through Codes