ViewSonic IFP8650 - Gen 1 IFP8650 Gen 1 User Guide - Page 87

RS-232 Protocol

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10. RS-232 Protocol 10.1 Introduction This document describes the hardware interface spec and software protocols of RS232 interface communication between ViewSonic LFD and PC or other control unit with RS232 protocol. The protocol contains three sections command: • Set-Function • Get-Function • Remote control pass-through mode ※ In the document below, "PC" represents all the control units that can sent or receive the RS232 protocol command. 10.2 Description 10.2.1 Hardware Specification ViewSonic LFD communication port on the rear side (1) Connector type: DSUB 9-Pin Male (or 3.5mm barrel connector) (2) Pin Assignment (3) Use of crossover (null modem) cable for connection Male DSUB 9-Pin Pin # 1 2 3 4 5 6 7 8 9 frame Signal NC RXD TXD NC GND NC NC NC NC GND Remark Input to Display Output from Display 3.5mm barrel connector (alternative for limited space) Pin # Tip Ring Sleeve Signal TXD RXD GND Remark Output from Display Input to Display 79

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79
10. RS-232 Protocol
10.1 Introduction
This document describes the hardware interface spec and software protocols of
RS232 interface communication between ViewSonic LFD and PC or other control
unit with RS232 protocol.
The protocol contains three sections command:
•
Set-Function
•
Get-Function
•
Remote control pass-through mode
※
In the document below, “PC” represents all the control units that can sent or
receive the RS232 protocol command.
10.2 Description
10.2.1 Hardware Specification
ViewSonic LFD communication port on the rear side
(1) Connector type: DSUB 9-Pin Male (or 3.5mm barrel connector)
(2) Pin Assignment
(3) Use of crossover (null modem) cable for connection
Male DSUB 9-Pin
Pin #
Signal
Remark
1
NC
2
RXD
Input to Display
3
TXD
Output from Display
4
NC
5
GND
6
NC
7
NC
8
NC
9
NC
frame
GND
3.5mm barrel connector
(alternative for limited
space)
Pin #
Signal
Remark
Tip
TXD
Output from Display
Ring
RXD
Input to Display
Sleeve
GND