Samsung SyncMaster 550DX - Control Codes

Tx
Gnd
3
5
<---------
----------
2
5
Tx
Gnd
• Connecting method
Control codes
•
Get control
Header command
ID
DATA Length
CheckSum
0xAA command type 0
• Set control
Header command
ID
DATA
Length
DATA
CheckSum
0xAA command
type
1 Value
• commanding words
No. command type command Value range
1 Power control 0x11 0~1
2 Volume control 0x12 0~100
3 Input source control 0x14 -
4 Screen Mode control 0x18 -
5 Screen Size control 0x19 0~255
6 PIP on/off control 0x3C 0~1
7 Auto adjustment control 0x3D 0
8 Video wall Mode control 0x5C 0~1
9 Safety Lock 0x5D 0~1
- ID should show hexadecimal value of assigned ID, but ID 0 should be 0xFF.
Introduction