Dell C5522QT External Control User Guide

DELL C5522QT External Control User Guide

Application

This document defines the communication method for control of the Dell LCD display C5522QT / C6522QT when using an external controller.

Connectors and wiring

RS-232C Remote Access

Connector: 9-pin D-Sub
Cable: Straight cable or null modem cable
RS232 Pin Assignment (Facing Display)

This display uses RXD, TXD and GND lines for RS-232 control.

Note 1: The RS232 cable is not provided by Dell.

LAN control

Connector: RJ-45 10/100 BASE-T
Cable: Category 5 or higher LAN cable

Note 2: The LAN cable is not provided by Dell

Communication Parameter

RS-232C Remote access
  1. Interface
    RS-232C
  2. Baud rate
    9600bps
  3. Data length
    8bits
  4. Parity
    None
  5. Stop bit
    1 bit
LAN control
  1. Communication system
    TCP/IP (Internet protocol suite)
  2. Interface
    Ethernet
  3. Communication layer
    Transport layer (TCP)
    Using the payload of TCP segment.
  4. IP address
    If you need to change, Default: 10.0.50.100 Please refer “Dell Web Management for Displays” section on User’s manual.
  5. Port No
    4661 (Fixed)

Communication Format

Control Command Syntax

[H0][H1][Len][R/W][Cmd][Data0]…[DataN][Chk]
[H0] = 0x37
[H1] = 0x51
[Len] = Length
[R/W] = Read/Write
Read = 0xEB
Write = 0xEA
[Cmd] = Command
[Data0]…[DataN] = Data0~N
[Chk] = Check Sum

Reply Command Syntax

[H2][H3][Len][Reply][RC][Cmd][Data0]…[DataN][Chk]
[H2] = 0x6F
[H3] = 0x37
[Len] = Length
[Reply] = Reply (0x02)
[RC] = Result Code
0 = Success
1 = Timeout
2 = Parameters Error
3 = Not connected
4 = Other Failure
[Cmd] = Command
[Data0]…[DataN] = Data0~N
[Chk] = Check Sum

Example: Get Display Name

[From PC to Display] = 37, 51, 02, EB, 01, 8E
[From Display to PC] = 6F, 37, 0F, 02, 00, 01, 44, 65, 6C, 6C, 20, 43, 37, 35, 32, 30, 51, 54, 13

CheckSum calculation
Xor byte by byte from first byte to the end of the command data stream.

Control Commands List

APIs Parm / Retuen / Comments HEAD_0 HEAD_1 LEN R/W CMD D0 D1 D2 D3 D4 D5 D6 D7 CHK HEAD_0 HEAD_1 LEN Reply Result CMD D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 CHK
/* MONITOR MANAGEMENT */
GetMonitorName Max 10 chars (in ASCII) 37 51 02 EB 01 8E 6F 37 0F 02 00 01
GetMonitorSerialNumber Max 10 chars (in ASCII) 37 51 02 EB 02 8D 6F 37 10 02 00 02
GetBacklightHours Monitor Backlight Hours (WORD)

0 – 65535

 37 51 02 EB 04 8B 6F 37 05 02 00 04
/* POWER MANAGEMENT */
GetPowerState Power State (BYTE)

0 – off

1 – on

2 – standby

 37 51 02 EB 20 AF 6F 37 04 02 00 20
SetPowerState – off 37 51 03 EA 20 00 AF 6F 37 03 02 00 20 79
SetPowerState – on 37 51 03 EA 20 01 AE 6F 37 03 02 00 20 79
SetPowerState – standby 37 51 03 EA 20 02 AD 6F 37 03 02 00 20 79
GetPowerLED Power LED Setting (BYTE)

0 – off during Active 1 – on during Active

 37 51 02 EB 21 AE 6F 37 04 02 00 21
SetPowerLED – off during active 37 51 03 EA 21 00 AE 6F 37 03 02 00 21 78
SetPowerLED – on during active 37 51 03 EA 21 01 AF 6F 37 03 02 00 21 78
GetPowerUSB Power USB Setting (BYTE)

0 – off during Standby 1 – on during Standby

 37 51 02 EB 22 AD 6F 37 04 02 00 22
SetPowerUSB – off during standby 37 51 03 EA 22 00 AD 6F 37 03 02 00 22 7B
SetPowerUSB – on during standby 37 51 03 EA 22 01 AC 6F 37 03 02 00 22 7B
ResetPower NONE 37 51 02 EA 2F A1 6F 37 03 02 00 2F 76
/* IMAGE ADJUSTMENT */
GetBrightness Brightness (BYTE) 0 – 100

values in increments of 1

 37 51 02 EB 30 BF 6F 37 04 02 00 30
SetBrightness – 75 37 51 03 EA 30 4B F4 6F 37 03 02 00 30 69
SetBrightness – 100 37 51 03 EA 30 64 DB 6F 37 03 02 00 30 69
SetBrightness – 0 37 51 03 EA 30 00 BF 6F 37 03 02 00 30 69
SetBrightnessStep – Decrease Brightness Step

0 – Decrease (-) 1 – Increase (+)

 37 51 03 EA 35 00 BA 6F 37 03 02 00 35 6C
SetBrightnessStep – Increase 37 51 03 EA 35 01 BB 6F 37 03 02 00 35 6C
GetContrast Contrast (BYTE) 0 – 100

values in increments of 1

 37 51 02 EB 31 BE 6F 37 04 02 00 31
SetContrast – 75 37 51 03 EA 31 4B F5 6F 37 03 02 00 31 68
SetContrast – 100 37 51 03 EA 31 64 DA 6F 37 03 02 00 31 68
SetContrast – 0 37 51 03 EA 31 00 BE 6F 37 03 02 00 31 68
StepContrastStep – Decrease Contrast Step

0 – Decrease (-) 1 – Increase (+)

 37 51 03 EA 36 00 B9 6F 37 03 02 00 36 6F
StepContrastStep – Increase 37 51 03 EA 36 01 B8 6F 37 03 02 00 36 6F
GetAspectRatio Aspect Ratio (BYTE)

0 – Wide 16:9 1 – Auto Resize 2 – 4:3

3 – 1:1

4 – 5:4

 37 51 02 EB 33 BC 6F 37 04 02 00 33
SetAspectRatio – Wide 16:9 37 51 03 EA 33 00 BC 6F 37 03 02 00 33 6A
SetAspectRatio – 4:3 37 51 03 EA 33 02 BE 6F 37 03 02 00 33 6A
 

SetAspectRatio – 5:4

  

37

  

51

  

03

  

EA

  

33

  

04

  

B8

  

6F

  

37

  

03

  

02

  

00

  

33

  

6A

GetSharpness Sharpness (BYTE) 0 – 100

values in increments of 10

 37 51 02 EB 34 BB 6F 37 04 02 00 34
SetSharpness – 50 37 51 03 EA 34 32 89 6F 37 03 02 00 34 6D
SetSharpness – 100 37 51 03 EA 34 64 DF 6F 37 03 02 00 34 6D
SetSharpness – 0 37 51 03 EA 34 00 BB 6F 37 03 02 00 34 6D
SetSharpnessStep – Decrease Sharpness Step

0 – Decrease (-) 1 – Increase (+)

 37 51 03 EA 37 00 B8 6F 37 03 02 00 37 6E
SetSharpnessStep – Increase 37 51 03 EA 37 01 B9 6F 37 03 02 00 37 6E
/* COLOR MANAGEMENT */
GetColorTempCaps Bitwise representation of color temperatures

(DWORD) 0x00000001 – 5000K

0x00000002 – 5700K

0x00000004 – 6500K

0x00000008 – 7500K

0x00000010 – 9300K

0x00000020 – 10000K

 37 51 02 EB 42 CD 6F 37 07 02 00 42
GetColorTemp 37 51 02 EB 43 CC 6F 37 07 02 00 43
SetColorTemp – 5000K 37 51 06 EA 43 01 00 00 00 C8 6F 37 03 02 00 43 1A
SetColorTemp – 5700K 37 51 06 EA 43 02 00 00 00 CB 6F 37 03 02 00 43 1A
SetColorTemp – 6500K 37 51 06 EA 43 04 00 00 00 CD 6F 37 03 02 00 43 1A
SetColorTemp – 7500K 37 51 06 EA 43 08 00 00 00 C1 6F 37 03 02 00 43 1A
SetColorTemp – 9300K 37 51 06 EA 43 10 00 00 00 D9 6F 37 03 02 00 43 1A
SetColorTemp – 10000K 37 51 06 EA 43 20 00 00 00 E9 6F 37 03 02 00 43 1A
GetInputColorFormat Input Color Format (BYTE)

0 – RGB

1 – YPbPr

 37 51 02 EB 46 C9 6F 37 04 02 00 46
SetInputColorFormat – RGB 37 51 03 EA 46 00 C9 6F 37 03 02 00 46 1F
SetInputColorFormat – YPbPr 37 51 03 EA 46 01 C8 6F 37 03 02 00 46 1F
GetColorPresetCaps Bitwise representation of color presets 0x00000001 – Standard

0x00000020 – Color Temp 0x00000080 – Custom Color 0x00000400 – ComfortView

 37 51 02 EB 47 C8 6F 37 07 02 00 47
GetColorPreset 37 51 02 EB 48 C7 6F 37 07 02 00 48
SetColorPreset – Standard 37 51 06 EA 48 01 00 00 00 C3 6F 37 03 02 00 48 11
SetColorPreset – ComfortView 37 51 06 EA 48 00 04 00 00 C6 6F 37 03 02 00 48 11
SetColorPreset – Custom 37 51 06 EA 48 80 00 00 00 42 6F 37 03 02 00 48 11
SetColorPreset – Color Temp 37 51 06 EA 48 20 00 00 00 E2 6F 37 03 02 00 48 11
GetCustomColor  

Custom color type (BYTE) 0 – Gain

R value (BYTE) – 0 – 100 G value (BYTE) – 0 – 100 B value (BYTE) – 0 – 100

 37 51 03 EB 49 C7 6F 37 06 02 00 49
SetCustomColor – Gain_RGB (100,100,10 37 51 06 EA 49 00 64 64 64 A7 6F 37 03 02 00 49 10
SetCustomColor – Gain_RGB (50,50,50) 37 51 06 EA 49 00 32 32 32 F1 6F 37 03 02 00 49 10
SetCustomColor – Gain_RGB (0,0,0) 37 51 06 EA 49 00 00 00 00 C3 6F 37 03 02 00 49 10
ResetColor NONE 37 51 02 EA 4F C1 6F 37 03 02 00 4F 16
/* VIDEO INPUT MANAGEMENT */
GetAutoSelect Auto Select (BYTE)

0 – off

1 – on

 37 51 02 EB 60 EF 6F 37 04 02 00 60
SetAutoSelect – off 37 51 03 EA 60 00 EF 6F 37 03 02 00 60 39
SetAutoSelect – on 37 51 03 EA 60 01 EE 6F 37 03 02 00 60 39
GetVideoInputCaps Bitwise representation of video inputs (DWORD) 0x00000001 – HDMI1

0x00000002 – HDMI2

0x00000004 – HDMI3

0x00000400 – HDMI4

0x00000008 – DP1

0x00001000 – USB-C

 37 51 02 EB 61 EE 6F 37 07 02 00 61
GetVideoInput 37 51 02 EB 62 ED 6F 37 07 02 00 62
SetVideoInput – HDMI1 37 51 06 EA 62 01 00 00 00 E9 6F 37 03 02 00 62 3B
SetVideoInput – HDMI2 37 51 06 EA 62 02 00 00 00 EA 6F 37 03 02 00 62 3B
SetVideoInput – HDMI3 37 51 06 EA 62 04 00 00 00 EC 6F 37 03 02 00 62 3B
SetVideoInput – HDMI4 37 51 06 EA 62 00 04 00 00 EC 6F 37 03 02 00 62 3B
SetVideoInput – DP1 37 51 06 EA 62 08 00 00 00 E0 6F 37 03 02 00 62 3B
SetVideoInput – USB-C 37 51 06 EA 62 00 10 00 00 F8 6F 37 03 02 00 62 3B
/* OSD MANAGEMENT */
GetOSDTransparency OSD Transparency (BYTE) 0 – 100

values in increments of 20

 37 51 02 EB 80 0F 6F 37 04 02 00 80
SetOSDTransparency – 20 37 51 03 EA 80 14 1B 6F 37 03 02 00 80 D9
SetOSDTransparency – 100 37 51 03 EA 80 64 6B 6F 37 03 02 00 80 D9
SetOSDTransparency – 0 37 51 03 EA 80 00 0F 6F 37 03 02 00 80 D9
GetOSDLanguage OSD Language (BYTE)

0 – English

1 – Español

2 – Français

3 – Deutsch

4 – Português (Brasil) 5 – Русский

6 – 简体中文

7 – 日本語

 37 51 02 EB 81 0E 6F 37 04 02 00 81
SetOSDLanguage – English 37 51 03 EA 81 00 0E 6F 37 03 02 00 81 D8
SetOSDLanguage – Español 37 51 03 EA 81 01 0F 6F 37 03 02 00 81 D8
SetOSDLanguage – Français 37 51 03 EA 81 02 0C 6F 37 03 02 00 81 D8
SetOSDLanguage – Deutsch 37 51 03 EA 81 03 0D 6F 37 03 02 00 81 D8
SetOSDLanguage – Português (Brasil) 37 51 03 EA 81 04 0A 6F 37 03 02 00 81 D8
SetOSDLanguage – Русский 37 51 03 EA 81 05 0B 6F 37 03 02 00 81 D8
SetOSDLanguage – 简体中文 37 51 03 EA 81 06 08 6F 37 03 02 00 81 D8
SetOSDLanguage – 日本語 37 51 03 EA 81 07 09 6F 37 03 02 00 81 D8
GetOSDTimer OSD Timer (BYTE)

5 – 60 seconds

values in increments of 1

 37 51 02 EB 83 0C 6F 37 04 02 00 83
SetOSDTimer – 20 37 51 03 EA 83 14 18 6F 37 03 02 00 83 DA
SetOSDTimer – 60 37 51 03 EA 83 3C 30 6F 37 03 02 00 83 DA
SetOSDTimer – 5 37 51 03 EA 83 05 09 6F 37 03 02 00 83 DA
GetOSDButtonLock OSD Button Lock (BYTE)

0 – Unlock

1 – Lock

 37 51 02 EB 84 0B 6F 37 04 02 00 84
SetOSDButtonLock – Unlock 37 51 03 EA 84 00 0B 6F 37 03 02 00 84 DD
SetOSDButtonLock – Lock 37 51 03 EA 84 01 0A 6F 37 03 02 00 84 DD
ResetOSD NONE 37 51 03 EA 8F 01 01 6F 37 03 02 00 8F D6
/* SYSTEM MANAGEMENT */
GetVersionFirmware Max 10 chars (in ASCII) 37 51 02 EB A0 2F 6F 37 0A 02 00 A0
GetDDCCI DDCCI (BYTE)

0 – Disabled

1 – Enabled

 37 51 02 EB A2 2D 6F 37 04 02 00 A2
SetDDCCI – Enable 37 51 03 EA A2 01 2C 6F 37 03 02 00 A2 FB
SetDDCCI – Disable 37 51 03 EA A2 00 2D 6F 37 03 02 00 A2 FB
GetLCDConditioning LCD Conditioning (BYTE)

0 – Disabled

1 – Enabled

 37 51 02 EB A3 2C 6F 37 04 02 00 A3
SetLCDConditioning – Disable 37 51 03 EA A3 00 2C 6F 37 03 02 00 A3 FA
SetLCDConditioning – Enable 37 51 03 EA A3 01 2D 6F 37 03 02 00 A3 FA
FactoryReset NONE 37 51 02 EA AF 21 6F 37 03 02 00 AF F6
/* AUDIO MANAGEMENT */
GetVolumeInput Volume (BYTE) 0 – 100

values in increments of 1

 37 51 02 EB B0 3F 6F 37 04 02 00 B0
SetVolumeInput – 0 37 51 03 EA B0 00 3F
SetVolumeInput – 50 37 51 03 EA B0 32 0D
SetVolumeInput – 100 37 51 03 EA B0 64 5B 6F 37 03 02 00 B0 E9
SetVolumeStep -Decrease Volume Step

0 – Decrease (-) 1 – Increase (+)

 37 51 03 EA B3 00 3C 6F 37 03 02 00 B3 EA
SetVolumeStep -Increase 37 51 03 EA B3 01 3D 6F 37 03 02 00 B3 EA
GetSpeakerMute Mute (BYTE)

0 – Disabled

1 – Enabled

 37 51 02 EB B1 3E 6F 37 04 02 00 B1
SetSpeakerMute – Unmute 37 51 03 EA B1 00 3E 6F 37 03 02 00 B1 E8
SetSpeakerMute – Mute 37 51 03 EA B1 01 3F 6F 37 03 02 00 B1 E8
AudioReset NONE 37 51 02 EA BF 31 6F 37 03 02 00 BF E6

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December 2020 Rev. A00