BenQ TL650 RS232 Commands for PDP and IFP Products - Page 2

1 Introduction This document describes the hardware interface spec and software protocols of RS232 interface communication between Commercial Display and PC or other control unit with RS232 protocol. Both sets protocol contain two sections command: Set-Function Get-Function ೈ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 LCD communication port in the rear side (1) Connector type: DSUB 9 Pin Male (2) Pin Assignment Pin # Signal Remark Male DSUB 9Pin 1 NC 2 RXD Input to LCD Monitor 3 TXD Output from LCD Monitor 4 NC (outside view) 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 (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) V1.0 2 / 20 Commercial Display RS-232 Protocol