1Preparations

1.4.3Control Codes

Viewing control state (Get control command)

Header

Command

 

Data length

 

 

 

ID

 

Checksum

0xAA

Command

0

 

 

 

type

 

 

 

 

 

 

 

 

Controlling (Set control command)

Header

Command

 

Data length

Data

 

 

 

ID

 

 

Checksum

0xAA

Command

1

Value

 

 

 

type

 

 

 

 

 

 

 

 

 

 

Command

No.

Command type

Command

Value range

 

 

 

 

1

Power control

0x11

0~1

 

 

 

 

2

Volume control

0x12

0~100

 

 

 

 

3

Input source control

0x14

-

 

 

 

 

4

Picture Size control

0x15

-

 

 

 

 

5

Video wall mode control

0x5C

0~1

 

 

 

 

6

Safety Lock

0x5D

0~1

 

 

 

 

Issued IDs can be displayed in hexadecimals. However, ID 0 must be displayed as 0xFF.

All communications take place in hexadecimals. The checksum is calculated by adding up all values except the header. If a checksum adds up to be more than 2 digits as shown below (11+FF+01+01=112), the first digit is removed.

E.g. Power On & ID=0

Header

Command

 

 

0xAA

0x11

 

 

ID

Data length

Data 1

1"Power"

Checksum

Header

Command

 

 

0xAA

0x11

 

 

ID

Data length

Data 1

 

 

1

1

 

 

12

To control all devices connected by a serial cable simultaneously irrespective of IDs, set the ID as "0xFE" and transmit commands. Commands will be executed by each device but ACK will not respond.

1 Preparations 36

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Samsung LH22UDBPLBB/EN Control Codes, Viewing control state Get control command, Controlling Set control command, Command

LH22UDBPLBB/XY, LH22UDBPLBB/EN, LH22UDBPLBB/NG, LH22UDBPLBB/XJ specifications

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