Control Codes - Samsung MD40B User Manual

1
Preparations

1.5.3 Control Codes

Viewing control state (Get control command)
Header
0xAA
Controlling (Set control command)
Header
0xAA
Command
No.
1
2
3
4
5
6
7
8
9
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
0xAA
Header
0xAA
Command
ID
Command
type
Command
ID
Command
type
Command type
Power control
Volume control
Input source control
Screen mode control
Screen size control
PIP on/off control
Auto adjustment control
Video wall mode control
Safety Lock
Command
ID
0x11
Command
ID
0x11
Data length
Checksum
0
Data length Data
1 Value
Command Value range
0x11
0x12 0~100
0x14
0x18
0x19 0~255
0x3C
0x3D
0x5C
0x5D
Data length Data 1
1 "Power"
Data length Data 1
1 1
Checksum
0~1
-
-
0~1
0
0~1
0~1
Checksum
12
41
1 Preparations