ViewSonic PX748-4K RS-232/LAN Control Protocol Specification - Page 5

Introduction, 2 Description, 2.1 Hardware specification

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Projector RS-232 Protocol 1 Introduction This document describes the hardware interface spec and software protocols of RS232 interface communication between ViewSonic Projectors and Control unit, such as PC and AMX controller, with RS232 protocol. The protocol contains three sections command:  Write-Function  Read-Function  Execute-Function 2 Description 2.1 Hardware specification Viewsonic Projector communication port on the rear side (1) Connector type: DSUB 9-Pin (2) Pin Assignment :  Male DSUB 9-Pin (outside view)  Female DSUB 9-Pin (outside view) Note: 1.Use of crossover (null modem) cable required for use with control device if needed. 2. Only 3 pins connection needed for control communication. For example, below is for Male DSUB 9-Pin Pin # 2 3 5 Signal RXD TXD GND Remark 3 / 35 Projector RS-232 Protocol

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Projector RS-232 Protocol
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Projector RS-232 Protocol
1
Introduction
This document describes the hardware interface spec and software protocols of RS232 interface
communication between ViewSonic Projectors and Control unit, such as PC and AMX controller, with RS232
protocol.
The protocol contains three sections command:
Write-Function
Read-Function
Execute-Function
2
Description
2.1 Hardware specification
Viewsonic Projector communication port on the rear side
(1) Connector type: DSUB 9-Pin
(2) Pin Assignment :
Male DSUB 9-Pin (outside view)
Female DSUB 9-Pin (outside view)
Note:
1.
Use of crossover (null modem) cable required for use with control device if needed.
2.
Only 3 pins connection needed for control communication.
For example, below is for Male DSUB 9-Pin
Pin
#
Signal
Remark
2
RXD
3
TXD
5
GND