Samsung UHD Signage Player Box - Manual (Page 25)

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Control Codes
Viewing control state (Get control command)
Header Command
ID
Data length
Checksum
0xAA Command type 0
Controlling (Set control command)
Header Command
ID
Data length Data
Checksum
0xAA Command type 1 Value
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 Safety Lock 0x5D 0~1
• 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
ID
Data length Data 1
Checksum
0xAA 0x11 1 "Power"
Header Command
ID
Data length Data 1
12
0xAA 0x11 1 1
• 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.