Benq SL4302K, SL5502K, SL6502K, SL7502K, SL8502K RS232 & LAN Protocol Installation Guide
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SL4302K/SL5502K/SL6502K/SL7502K/SL8502K
RS232 & LAN Protocol
Installation Guide
2
Table of Contents
............................................................................................................................................... 2
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 ............................................................................................. 5
Set-function listing ......................................................................................................................................................... 5
Set-function description ............................................................................................................................................... 6
Set-function format ........................................................................................................................................... 6
Set-function table .............................................................................................................................................. 8
Get-function listing ...................................................................................................................................................... 13
Get-function description ............................................................................................................................................ 13
Get-function format ........................................................................................................................................ 13
Get-function table ........................................................................................................................................... 16
Date: 2020/10/6
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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.
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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
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RS232 via LAN
Find the Wired LAN IP address of the connected display from the OSD menu and make sure the display and the computer
are within the same network.
I
Protocol Command Description
Item
Description
Length
Total Bytes of Message excluding "CR"
TV ID
Identification for each of TV
TV ID is “01” for LAN control & RS232 control
Command Type
Identify command type,
"s" (0x73h): Set Command
"g" (0x67h): Get Command "r"
(0x72h): Reply Command
"+" (0x2Bh): Valid command Reply
"-" (0x2Dh): Invalid command Reply
Command
Function command code: One byte ASCII code
Value [1~3]
Three bytes ASCII that defines the value
CR
0x0D
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 11 bytes.
PC or laptop
LAN cable
RJ45 port on a display
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Set-function description
Item
Description
Length
Total Bytes of Message excluding "CR"
TV ID
Identification for each of TV
TV ID is “01” for LAN control & RS232 control
Command Type
Identify command type, "s"
(0x73h): Set Command
Command
Function command code: One byte ASCII code
Value [1~3]
Three bytes ASCII that defines the value
CR
0x0D
Set-function format
Send: (Command Type="s")
Name
Length
ID
Command type
Command
Value1
Value2
Value3
CR
Byte count
1 Byte
2 Byte
1 Byte
1 Byte
1 Byte
1 Byte
1 Byte
1 Byte
Bytes order
1
2~3 4 5 6 7 8 9
Reply: (Command Type="+" or "-")
Name
Length
ID
Command type
CR
Byte count
1 Byte
2 Byte
1 Byte
1 Byte
Bytes order
1
2~3 4 5
Example 1: Set Brightness as 76 and this command is valid.
Send (Hex Format)
Name
Length
ID
Command type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30 0x31
0x73
0x24
0x30
0x37
0x36
0x0D
Reply (Hex Format)
Name
Length
ID
Command type
CR
Hex
0x34
0x30 0x31
0x2B
0x0D
Example 2: Set Brightness as 176 and this command is NOT valid.
Send (Hex Format)
Name
Length
ID
Command type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30 0x31
0x73
0x24
0x31
0x37
0x36
0x0D
7
Reply (Hex Format)
Name
Length
ID
Command type
CR
Hex
0x34
0x30 0x31
0x2D
0x0D
Example 3: Set Balance as 50 this command is valid.
Send (Hex Format)
Name
Length
ID
Command type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30 0x31
0x73
0x39
0x30
0x35
0x30
0x0D
Reply (Hex Format)
Name
Length
ID
Command type
CR
Hex
0x34
0x30 0x31
0x2D
0x0D
Example 4: Set Balance as 115 this command is Not valid.
Send (Hex Format)
Name
Length
ID
Command type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30 0x31
0x73
0x39
0x31
0x31
0x35
0x0D
Reply (Hex Format)
Name
Length
ID
Command type
CR
Hex
0x34
0x30 0x31
0x2D
0x0D
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