Samsung QHH Series User Manual

Also see for DB43J: Quick setup guide User manual User manual User manual User manual

34Control CodesViewing control state (Get control command)Header Command ID Data length Checksum0xAA Commandtype0Controlling (Set control command)Header Command ID Data length Data Checksum0xAA Commandtype1 ValueCommandNo. Command type Command Value range1 Power control 0x11 0~12 Volume control 0x12 0~1003 Input source control 0x14 -4 Screen size control 0x19 0~2555 Video wall mode control 0x5C 0~16 Safety Lock 0x5D 0~17 Video Wall On 0x84 0~18 Video Wall User Control 0x89 -• All communications take place in hexadecimals. The checksum is calculated by addingup all values except the header. If a checksum adds up to be more than 2 digits as shownbelow (11+FF+01+01=112), the first digit is removed.E.g. Power On & ID=0Header Command ID Data length Data 1 Checksum0xAA 0x11 1 "Power"Header Command ID Data length Data 1 120xAA 0x11 1 1• To control all devices connected by a serial cable simultaneously irrespective of IDs, setthe ID as "0xFE" and transmit commands. Commands will be executed by each device butACK will not respond.