36
Preparations
1
1 Preparations
1.4.3 Control
Codes
Viewing control state (Get control command)
Controlling (Set control command)
Command
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
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.
Header
Command
ID
Data length
Checksum
0xAA
Command
type
0
Header
Command
ID
Data length
Data
Checksum
0xAA
Command
type
1
Value
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
Header
Command
ID
Data length
Data 1
Checksum
0xAA
0x11
1
"Power"
Header
Command
ID
Data length
Data 1
12
0xAA
0x11
1
1