Dell C5517H User manual

Dell™ C5517H RS232 Protocol Document

RS232 Projector Pin Assignment (Facing Monitor) 



RS232 Serial Communication Cable Pin Assignment (Facing Cable) 

Pin Assignments

RS232

PIN DESCRIPTION

RS232

TXD

RXD

GROUND

Not Used

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

RS232 Protocol

Communication Settings 

Connection Settings

Value

Baud Rate

9600 bps

Data Bits

8 bits

Parity

None

Stop Bits

1 bit

Flow control

None

Command Types

To adjust the OSD settings.

Control Command Syntax (From PC to Monitor)

[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 (From Monitor to PC)

[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 Monitor Name (Maximum 10 characters)

[From PC to Monitor] = 37, 51, 02, EB, 01, 8E

[From Monitor to PC] = 6F, 37, 0F, 02, 00, 01, 44, 65, 6C, 6C, 20, 43, 35, 35, 31, 37, 48,

00, 58

CheckSum calculation

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

Control Commands List

Command Description

Command

Header_

(BYTE)

Header_

(BYTE)

Length

(BYTE)

R/W

(BYTE)

Command

(BYTE)

[Data0-DataN]-

[CheckSum]

[BYTEx(N+1)]-

[BYTE]

Header_

(BYTE)

Header_

(BYTE)

Length

(BYTE)

ReplyCode

(BYTE)

ResultCode

(BYTE)

Command

(BYTE)

[Data0-

DataN]-

[CheckSum]

[BYTEx(N+1)]-

[BYTE]

Parm / Return / Comments

/* MONITOR MANAGEMENT */

GetMonitorName

0x37

0x51

0x02

0xEB

0x01

CHK

0x6F

0x37

0x0F

0x02

[RC]

0x01

[Data0],…,[Dat

aB],CHK

ASCII string

GetMonitorSerialNumber

0x37

0x51

0x02

0xEB

0x02

CHK

0x6F

0x37

0x10

0x02

[RC]

0x02

[Data0],…,[Dat

aC],CHK

ASCII string

GetBacklightHours

0x37

0x51

0x02

0xEB

0x04

CHK

0x6F

0x37

0x05

0x02

[RC]

0x04

[Data0],…,[Dat

a1],CHK

Monitor Backlight Hours (WORD)

0 - 65535

/* POWER MANAGEMENT */

GetPowerState

0x37

0x51

0x02

0xEB

0x20

CHK

0x6F

0x37

0x04

0x02

[RC]

0x20

[Data0],CHK

Power State (BYTE)

0 - off

1 - on

SetPowerState

0x37

0x51

0x03

0xEA

0x20

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0x20

CHK

GetPowerLED

0x37

0x51

0x02

0xEB

0x21

CHK

0x6F

0x37

0x04

0x02

[RC]

0x21

[Data0],CHK

Power LED Setting (BYTE)

0 - off during Active

1 - on during Active

SetPowerLED

0x37

0x51

0x03

0xEA

0x21

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0x21

CHK

GetPowerUSB

0x37

0x51

0x02

0xEB

0x22

CHK

0x6F

0x37

0x04

0x02

[RC]

0x22

[Data0],CHK

Power USB Setting (BYTE)

0 - off during Standby

1 - on during Standby

SetPowerUSB

0x37

0x51

0x03

0xEA

0x22

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0x22

CHK

ResetPower

0x37

0x51

0x02

0xEA

0x2F

CHK

0x6F

0x37

0x03

0x02

[RC]

0x2F

CHK

NONE

/* IMAGE ADJUSTMENT */

GetBrightness

0x37

0x51

0x02

0xEB

0x30

CHK

0x6F

0x37

0x04

0x02

[RC]

0x30

[Data0],CHK

Brightness (BYTE)

0 - 100

values in increments of 1

SetBrightness

0x37

0x51

0x03

0xEA

0x30

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0x30

CHK

GetContrast

0x37

0x51

0x02

0xEB

0x31

CHK

0x6F

0x37

0x04

0x02

[RC]

0x31

[Data0],CHK

Contrast (BYTE)

0 - 100

values in increments of 1

SetContrast

0x37

0x51

0x03

0xEA

0x31

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0x31

CHK

GetAspectRatio

0x37

0x51

0x02

0xEB

0x33

CHK

0x6F

0x37

0x04

0x02

[RC]

0x33

[Data0],CHK

Aspect Ratio (BYTE)

0 - Wide 16:9

2 - 4:3

4 - 5:4

SetAspectRatio

0x37

0x51

0x03

0xEA

0x33

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0x33

CHK

GetSharpness

0x37

0x51

0x02

0xEB

0x34

CHK

0x6F

0x37

0x04

0x02

[RC]

0x34

[Data0],CHK

Sharpness (BYTE)

0 - 100

values in increments of 10

SetSharpness

0x37

0x51

0x03

0xEA

0x34

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0x34

CHK

/* COLOR MANAGEMENT */

GetColorTempCaps

0x37

0x51

0x02

0xEB

0x42

CHK

0x6F

0x37

0x07

0x02

[RC]

0x42

[Data0],…,[Dat

a3],CHK

Bitwise representation of color

temperatures (DWORD)

0x00000001 - 5000K

0x00000002 - 5700K

0x00000004 - 6500K

0x00000008 - 7500K

0x00000010 - 9300K

0x00000020 - 10000K

GetColorTemp

0x37

0x51

0x02

0xEB

0x43

CHK

0x6F

0x37

0x07

0x02

[RC]

0x43

[Data0],…,[Dat

a3],CHK

SetColorTemp

0x37

0x51

0x06

0xEA

0x43

[Data0],…,[Dat

a3],CHK

0x6F

0x37

0x03

0x02

[RC]

0x43

CHK

GetInputColorFormat

0x37

0x51

0x02

0xEB

0x46

CHK

0x6F

0x37

0x04

0x02

[RC]

0x46

[Data0],CHK

Input Color Format (BYTE)

0 - RGB

1 - YPbPr

SetInputColorFormat

0x37

0x51

0x03

0xEA

0x46

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0x46

CHK

GetColorPresetCaps

0x37

0x51

0x02

0xEB

0x47

CHK

0x6F

0x37

0x07

0x02

[RC]

0x47

[Data0],…,[Dat

a3],CHK

Bitwise representation of color presets

0x00000001 - Standard

0x00000002 - Multimedia

0x00000020 - Color Temp

0x00000080 - Custom Color

GetColorPreset

0x37

0x51

0x02

0xEB

0x48

CHK

0x6F

0x37

0x07

0x02

[RC]

0x48

[Data0],…,[Dat

a3],CHK

SetColorPreset

0x37

0x51

0x06

0xEA

0x48

[Data0],…,[Dat

a3],CHK

0x6F

0x37

0x03

0x02

[RC]

0x48

CHK

GetCustomColor

0x37

0x51

0x03

0xEB

0x49

[Data0],CHK

0x6F

0x37

0x06

0x02

[RC]

0x49

[Data0],…,[Dat

a2],CHK

Custom color type (BYTE)

0 - Gain

R value (BYTE) - 0 - 100

G value (BYTE) - 0 - 100

B value (BYTE) - 0 - 100

SetCustomColor

0x37

0x51

0x06

0xEA

0x49

[Data0],…,[Dat

a3],CHK

0x6F

0x37

0x03

0x02

[RC]

0x49

CHK

ResetColor

0x37

0x51

0x02

0xEA

0x4F

CHK

0x6F

0x37

0x03

0x02

[RC]

0x4F

CHK

NONE

/* VIDEO INPUT MANAGEMENT

GetAutoSelect

0x37

0x51

0x02

0xEB

0x60

CHK

0x6F

0x37

0x04

0x02

[RC]

0x60

[Data0],CHK

Auto Select (BYTE)

0 - off

1 - on

SetAutoSelect

0x37

0x51

0x03

0xEA

0x60

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0x60

CHK

GetVideoInputCaps

0x37

0x51

0x02

0xEB

0x61

CHK

0x6F

0x37

0x07

0x02

[RC]

0x61

[Data0],…,[Dat

a3],CHK

Bitwise representation of video inputs

(DWORD)

0x00000001 - HDMI1

0x00000002 - HDMI2

0x00000008 - DP1

0x00000040 - VGA1

GetVideoInput

0x37

0x51

0x02

0xEB

0x62

CHK

0x6F

0x37

0x07

0x02

[RC]

0x62

[Data0],…,[Dat

a3],CHK

SetVideoInput

0x37

0x51

0x06

0xEA

0x62

[Data0],…,[Dat

a3],CHK

0x6F

0x37

0x03

0x02

[RC]

0x62

CHK

/* OSD MANAGEMENT */

SetOSDTransparency

0x37

0x51

0x03

0xEA

0x80

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0x80

CHK

OSD Transparency (BYTE)

0 - 100

values in increments of 20

GetOSDTransparency

0x37

0x51

0x02

0xEB

0x80

CHK

0x6F

0x37

0x04

0x02

[RC]

0x80

[Data0],CHK

SetOSDLanguage

0x37

0x51

0x03

0xEA

0x81

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0x81

CHK

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

GetOSDLanguage

0x37

0x51

0x02

0xEB

0x81

CHK

0x6F

0x37

0x04

0x02

[RC]

0x81

[Data0],CHK

SetOSDTimer

0x37

0x51

0x03

0xEA

0x83

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0x83

CHK

OSD Timer (BYTE)

5 - 60 seconds

values in increments of 1

GetOSDTimer

0x37

0x51

0x02

0xEB

0x83

CHK

0x6F

0x37

0x04

0x02

[RC]

0x83

[Data0],CHK

SetOSDButtonLock

0x37

0x51

0x03

0xEA

0x84

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0x84

CHK

OSD Button Lock (BYTE)

0 - Unlock

1 - Lock

GetOSDButtonLock

0x37

0x51

0x02

0xEB

0x84

CHK

0x6F

0x37

0x04

0x02

[RC]

0x84

[Data0],CHK

ResetOSD

0x37

0x51

0x02

0xEA

0x8F

CHK

0x6F

0x37

0x03

0x02

[RC]

0x8F

CHK

NONE

/* SYSTEM MANAGEMENT */

GetVersionFirmware

0x37

0x51

0x02

0xEB

0xA0

CHK

0x6F

0x37

0x0A

0x02

[RC]

0xA0

[Data0],…,[Dat

a6],CHK

ASCII string

GetDDCCI

0x37

0x51

0x02

0xEB

0xA2

CHK

0x6F

0x37

0x04

0x02

[RC]

0xA2

[Data0],CHK

DDCCI (BYTE)

0 - Disabled

1 - Enabled

SetDDCCI

0x37

0x51

0x03

0xEA

0xA2

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0xA2

CHK

GetLCDConditioning

0x37

0x51

0x02

0xEB

0xA3

CHK

0x6F

0x37

0x04

0x02

[RC]

0xA3

[Data0],CHK

LCD Conditioning (BYTE)

0 - Disabled

1 - Enabled

SetLCDConditioning

0x37

0x51

0x03

0xEA

0xA3

[Data0],CHK

0x6F

0x37

0x03

0x02

[RC]

0xA3

CHK

FactoryReset

0x37

0x51

0x02

0xEA

0xAF

CHK

0x6F

0x37

0x03

0x02

[RC]

0xAF

CHK

NONE

Information in this document is subject to change without

Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is strictly

forbidden.

Trademarks used in this text: Dell and the DELL logo are trademarks of Dell Inc.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and

names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.

Oct 2016Rev. A01

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