BenQ ST430K Series User manual

1
ST430K Series LAN Control Protocol and
Installation Guide
For BenQ:
ST430K
ST550K
ST650K
Applicable for All Regions
Version: 1.2
Date: 2019/07/26

2
Table of Contents
Introduction...........................................................................................................................3
Control via LAN............................................................................................................................................................3
Protocol Command Description .............................................................................................4
Set-function listing.........................................................................................................................................................4
Set-function description...............................................................................................................................................4
Set-function format......................................................................................................................................4
Set-function table.........................................................................................................................................7
Get-function listing........................................................................................................................................................9
Get-function description..............................................................................................................................................9
Get-function format.....................................................................................................................................9
PC Get-function command to LCD Monitor .............................................................................................13

3
Introduction
This document describes the hardware interface spec and software protocols between Commercial
Display and PC.
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 protocol command.
Control 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.
IP Protocol Port: 4660
PC or laptop
LAN cable
RJ45 port on a display

4
Protocol Command Description
Item
Description
Length
Total Bytes of Message excluding "CR"
Display ID
Identification for each of display
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. The Set-Function packet format consists of 11 bytes.
Set-function description
Item
Description
Length
Total Bytes of Message excluding "CR"
Display ID
Identification for each of display
Display ID is “01”for LAN 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

5
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 for Display-02 and this command is valid.
Send (Hex Format)
Name
Length
ID
Command
type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30
0x32
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 for Display-02 and this command is NOT valid.
Send (Hex Format)
Name
Length
ID
Command
type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30
0x32
0x73
0x24
0x31
0x37
0x36
0x0D
Reply (Hex Format)
Name
Length
ID
Command
type
CR
Hex
0x34
0x30
0x31
0x2D
0x0D
Example 3: Set Tint as 32 for Display -03 and this command is valid.
Send (Hex Format)

6
Name
Length
ID
Command
type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30
0x33
0x73
0x27
0x30
0x33
0x32
0x0D
Reply (Hex Format)
Name
Length
ID
Command
type
CR
Hex
0x34
0x30
0x31
0x2B
0x0D
Example 4: Set Tint as 75 for Display -03 and this command is NOT valid.
Send (Hex Format)
Name
Length
ID
Command
type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30
0x33
0x73
0x27
0x30
0x37
0x35
0x0D
Reply (Hex Format)
Name
Length
ID
Command
type
CR
Hex
0x34
0x30
0x31
0x2D
0x0D
Example 5: Set Brightness as 76 for all Display and this command is valid.
Send (Hex Format)
Name
Length
ID
Command
type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x39
0x39
0x73
0x24
0x30
0x37
0x36
0x0D
No Reply.

7
Set-function table
Set Function
Len
Cmd
Type
Cmd
Code
(Hex)
Value Range (ASCII Bytes)
Power
8
s
21
000 : Monitor blacklight Off
001 : Monitor blacklight On
002 : Android Off
003 : System reboot
Video Source
8
s
22
000 : VGA
001 : HDMI1
002: HDMI2
021 : HDMI3
003 : AV
004 : YPbPr
101 : android
Aspect Ratio
8
s
31
000 : Full
001 : 4:3
002 : Film
003 : Subtitle
004 : PC Mode
Language
8
s
32
000: English
001: Français
002: Español
003: 繁中
004: 简中
005: Português
006: German
007: Dutch
008: Polish
009: Russia
010:Czech
011:Danish
012:Swedish
013:Italian
014:Romanian
015:Norwegian
016:Finnish

8
017:Greek
018:Turkish
019:Arabic
020:Japanse
Volume
8
s
35
0 ~ 100
200 Volume -
300 Volume +
Mute
8
s
36
000: off
001: on
Button&IR Control
8
s
43
000: Disable
001: Enable
All Reset (OSD recall)
8
s
7E
Auto Adjustment
Execute
8
s
8F
For VGA only, execute auto adjustment.

9
Get-function listing
The PC can interrogate the LCD Monitor for specific information. The Get-Function packet format
consists of 5 bytes which are similar to the Set-Function packet structure. Note that the "Value" byte is
always = 00.
Get-function description
Item
Description
Length
Total Bytes of messages excluding "CR"
Display ID
Identification for each of display V
Command Type
Identify command type,
"g" (0x67h): Get Command
Command
Function command code: One byte ASCII code
Value [1~3]
Three bytes ASCII that defines the value
NOTE: To get backlight senor, thermal sensor, and ambient sensor,
you need four bytes ASCII that defines the value and the length is 9.
CR
0x0D
Get-function format
Send: (Command Type="g")
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="r" or "-")
If the Command is valid, Command Type ="r"
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

10
If the Command is Not valid, Command Type="-"
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: Get Brightness from Display -05 and this command is valid.
The Brightness value is 67.
Send (Hex Format)
Name
Length
ID
Command
type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30
0x35
0x67
0x62
0x30
0x30
0x30
0x0D
Reply (Hex Format)
Name
Length
ID
Command
type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30
0x35
0x72
0x62
0x30
0x36
0x37
0x0D
Example 3: Get Tint from Display -0007 and this command is valid.
The Tint value is 32.
Send (Hex Format)
Name
Length
ID
Command
type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30
0x37
0x67
0X65
0x30
0x30
0x30
0x0D
Reply (Hex Format)
Name
Length
ID
Command
type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30
0x37
0x72
0x65
0x30
0x33
0x32
0x0D