BenQ 55″ Education Interactive Flat Panel Display Installation Guide

: June 6, 2024
: BenQ

Table of Contents

BenQ 55″ Education Interactive Flat Panel Display
Introduction
Wire arrangement
RS232 pin assignment
Connections and communication settings
Protocol Command Description
Set-function table
Get-function listing
- Get-function description
- Get-function format
PC Get-function command to LCD Monitor
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Benq

BenQ 55″ Education Interactive Flat Panel Display

BenQ 55 Education Interactive Flat Panel Display

Introduction

This document describes the hardware interface spec and software protocols of RS232 interface communication between Commercial Display and PC or another control unit with RS232 protocol. This set protocol allows users to assign the ID in the command to control the specified 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

Communication setting

Baud rate select: 38400bps (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 a control command to the Monitor, the Monitor shall response as follows:

If the message is received correctly, it will send “+” (02Bh) followed by “CR” (00Dh).
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 with a straight cable

RS232 serial port with a straight cable

RS232 via LAN

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.

RS232 via HDBaseT

RS232 via HDBaseT

Protocol Command Description

Item	Description
Length	Total Bytes of Message excluding “CR”
TV ID	Identification for each of TV
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.

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
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 for TV-02 and this command is valid. Send (Hex Format)

Reply (Hex Format)

Name

|

Length

|

ID

| Command type|

CR

---|---|---|---|---

Hex

|

0x34

| 0x30

0x31

|

0x2B

|

0x0D

Example 2: Set Brightness as 176 for TV-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 TV-03 and this command is valid. Send (Hex Format)

Name

|

Length

|

ID

| Command type|

Command

|

Value1

|

Value2

|

Value3

|

CR

---|---|---|---|---|---|---|---|---

Hex

|

0x38

| 0x30

0x33

|

0x73

|

0x27

|

0x30

|

0x33

|

0x32

|

0x0D

Example 4: Set Tint as 75 for TV-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 TV 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

Set-function table

					Value Range (ASCII Bytes)
Set Function	Len	ID	Cmd Type	Cmd Code

(Hex)

| RS232 Control| LAN Control
Power| 8| | s| 21| 000 : ——- / Monitor

Off

|

000 : Monitor Off

001 : Android On / Monitor On| 001 : Monitor On
002 : Android Off / ——-|
Video Source| 8| | s| 22| 000 : VGA| 000 : VGA
001 : HDMI1| 001 : HDMI1
| | | | | 002: HDMI2| 002: HDMI2
---|---|---|---|---|---|---
021 : HDMI3| 021 : HDMI3
022 : HDMI4| 022 : HDMI4
101 : android| 101 : android
102 : OPS| 102 : OPS
Aspect Ratio| 8| | s| 31| | 000: Default
| 001: 16:9
| 002: 4:3
| 003: Auto
| 004 : Panorama Mode
| 005 : Just Scan
| 006 : 14:9
| 007 : 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
| 017:Greek
| 019:Arabic
| 020: Japanse
| 021: Thailand
| 023 : Hungarian
| 024 : Persian
| 025 : Vietnamese
Volume|

8

| |

s

|

35

| 200 Volume –| 200 Volume –
300 Volume +| 300 Volume +
Mute| 8| | s| 36| 002: turn (State change)| 002: turn (State change)
---|---|---|---|---|---|---
Remote control| 8| | s| 40| 010 : Remote Up| |

011 : Remote Down| |

012 : Remote Left| |

013 : Remote Right| |

014 : Remote OK| |

020 : Remote OSD Menu| |

021 : Remote Source| |

023 : Remote Back (Android Back

key)

| |

031 : Blank| |

032 : Freeze| |

Button&IR Control| 8| | s| 43| | 000: Disable
| 001: Enable
All Reset| 8| | s| 7E| | 000

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”
TV ID	Identification for each of TV
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

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 TV-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

Example 3: Get Tint from TV-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

Example 4: Get Tint from TV-07, but the Brightness command ID is error and it is NOT in the command table.

Send (Hex Format)

Name

|

Length

|

ID

| Command type|

Command

|

Value1

|

Value2

|

Value3

|

CR

---|---|---|---|---|---|---|---|---

Hex

|

0x38

| 0x30

0x37

|

0x67

|

0XD7

|

0x30

|

0x30

|

0x30

|

0x0D

Example 5: Get backlight sensor from TV-0007 and this command is valid. The lux value is 1786 (ASCII code).

Send (Hex Format)

Name

|

Length

|

ID

| Command type|

Command

|

Value1

|

Value2

|

Value3

|

Value4

|

CR

---|---|---|---|---|---|---|---|---|---

Hex

|

0x39

| 0x30

0x37

|

0x67

|

0X6F

|

0x30

|

0x30

|

0x30

|

0x30

|

0x0D

Reply (Hex Format)

Name

|

Length

|

ID

| Command type|

Command

|

Value1

|

Value2

|

Value3

|

Value4

|

CR

---|---|---|---|---|---|---|---|---|---

Hex

|

0x39

| 0x30

0x37

|

0x72

|

0X6F

|

0x31

|

0x37

|

0x38

|

0x36

|

0x0D

Example 6: Get ambient sensor from TV-0007 and this command is valid. The lux value is 1568 (ASCII code).

Send (Hex Format)

Name

|

Length

|

ID

| Command type|

Command

|

Value1

|

Value2

|

Value3

|

Value4

|

CR

---|---|---|---|---|---|---|---|---|---

Hex

|

0x39

| 0x30

0x37

|

0x67

|

0X70

|

0x30

|

0x30

|

0x30

|

0x30

|

0x0D

Reply (Hex Format)

Name

|

Length

|

ID

| Command type|

Command

|

Value1

|

Value2

|

Value3

|

Value4

|

CR

---|---|---|---|---|---|---|---|---|---

Hex

|

0x39

| 0x30

0x37

|

0x72

|

0X70

|

0x31

|

0x35

|

0x36

|

0x38

|

0x0D

PC Get-function command to LCD Monitor

	Value Range (ASCII Bytes)
Get Function	Len

Type

| Cmd Code

(Hex)

| RS232| LAN
Model Info| 20| | g| 20| | (1) Input value: Byte1 – Byte2 – Byte3…Byte15 Byte2~Byte11=0x00

Byte1=0x01: Get Customer Name Byte1=0x02: Get Customer Model Name Byte1=0x04: Get Scaler Firmware Version Byte1=0x06: Get Serial Number

(2) Return value: Byte1 – Byte2 – Byte3…Byte15

The Byte1 value at the return value should be the same as the value of Byte1 at input value.

Byte2~Byte15 should be ASCII format.

Ex: If Customer=Generic, Byte1=0x01, Byte2=’G’, Byte3=’e’,…Byte8=’c’, Byte9~Byte11=0x00.

Ex: If the Scaler Firmware Version=1.02, Byte1=0x03, Byte2=’1′,

Byte3=’.’, Byte4=’0′, Byte5=’2′, Byte6~Byte11=0x00.

Signal Status| 8| | g| 22| | 000: Signal unstable
| 001: Signal stable (Active Sync exists)
Volume| 8| | g| 66| 000 ~ 100| 000 ~ 100
Mute| 8| | g| 67| 000: Off| 000: Off
001: On| 001: On
Button&IR Control| 8| | g| 69| | 000: Disable
| 001: Enable
Video Source| 8| | g| 6A| | 000 : VGA
| 001 : HDMI1
| 002: HDMI2
| 021 : HDMI3
| 022 : HDMI4
| 101 : android
| 102 : OPS
Power| 8| | g| 6C| | 000 : Monitor Off
001 :

Android On

|

001 : Monitor On

002 :|
| | | | | Android Off|
---|---|---|---|---|---|---
Aspect Ratio| 8| | g| 77| | 000: Default
| 001: 16:9
| 002: 4:3
| 003: Auto
| 004 : Panorama Mode
| 005 : Just Scan
| 006 : 14:9
| 007 : PC Mode
Language| 8| | g| 78| | 000: English

Network Setting

|

14

|

g

|

E1

(1) Byte1=0x00: IP Setup Mode Byte1=0x01: IP Address Byte1=0x02: Get Subnet Mask Byte1=0x03: Default Gateway

Byte1=0x04: Primary DNS

Monitor ID default : 01 (30 31)
Note: When the monitor is in standby or Android off mode, the only workable RS232 command is “Android On”. LAN commands work only when the monitor is powered on (Android on).