Benq PL4901, PL5501, PL5502 RS232 & LAN Protocol Installation Guide

1

PL4901/PL5501/PL5502
RS232 & LAN Protocol Installation Guide

2

Table of Contents

Introduction ........................................................................................................................... 3

Wire arrangement ......................................................................................................................................................... 3

RS232 pin assignment ................................................................................................................................................... 3

Communication setting ...................................................................................................................................... 4

Command message reference ............................................................................................................................ 4

Connections and communication settings .............................................................................. 4

RS232 serial port connection ..................................................................................................................................... 4

RS232 via LAN ............................................................................................................................................................... 5

Protocol Command Description ............................................................................................. 6

Set-function listing ......................................................................................................................................................... 6

Set-function description ............................................................................................................................................... 6

Set-function format ........................................................................................................................................... 6

Set-function table .............................................................................................................................................. 8

Get-function listing ...................................................................................................................................................... 11

Get-function description ............................................................................................................................................ 11

Get-function format ........................................................................................................................................ 11

PC Get-function command .............................................................................................................................. 13

Date: 2020/03/31

3

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.

This set protocol allow users to assign the ID in the command to control the specify ID monitor.
The set protocol contains two sections command: Set-Function and Get-Function

In this document, "PC" represents all the control units that can send or receive the RS232 protocol command.

Wire arrangement

Wire Arrangement

P1

Color

P2 1 Black

1 2 Brown

3

3

Red

2 4 Orange

4 5 Yellow

5 6 Green

6

7

Blue

7 8 Purple

8

9

Gray

9

Case

Drain wire

Case

RS232 pin assignment

Pin

Description

Pin

Description

1

NC 2 RXD

3

TXD 4 NC

5

GND

6

NC

7

RTS

8

CTS 9 NC

Use of crossover (null modem) cable requires use with PC.

4

Communication setting

Baud rate select: 9600bps (fixed)/ Data bits: 8 bits (fixed)

Parity: None (fixed)/ Stop Bits: 1(fixed)

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 received correctly, it will send "+" (02Bh) followed by "CR" (00Dh).

2. If the message is received incorrectly, it will send "-" (02Dh) followed by "CR" (00Dh).

Connections and communication settings

Choose one of the connections and set up properly before RS232 control.

RS232 serial port connection

The image below is just for illustration purpose, PL4901/PL5501/PL5502 use RJ45 connector in display side for RS232
connection.

5

RS232 via LAN

Make sure the display and the computer are within the same network.

IP Protocol Port: 4660

PC or laptop

LAN cable

RJ45 port on a display