2-22 2-22user's manual R5975236-r3 user's manual R5975236-r3
Chapter 2: Elementary commands
Chapter 2: Elementary commands
Example
Read the status of a projector with address \x01.
Suppose the status is projector on, text on, video mute off, picture freezed and
no 800-peripheral connected.
Transmit
Start \xfe
Projector address \x01
Command[0] \x67
Checksum \x68
Stop \xff
Receive (acknowledge)
Start \xfe
Projector address \x01
Command[0] \x00
Command[1] \x06
Checksum \x07
Stop \xff
Receive (answer)
Start \xfe
Projector address \x01
Command[0] \x67
Data[0] \x0b
Checksum \x73
Stop \xff
projector status, read
Example
Read the status of a projector with address \x01.
Suppose the status is projector on, text on, video mute off, picture freezed and
no 800-peripheral connected.
Transmit
Start \xfe
Projector address \x01
Command[0] \x67
Checksum \x68
Stop \xff
Receive (acknowledge)
Start \xfe
Projector address \x01
Command[0] \x00
Command[1] \x06
Checksum \x07
Stop \xff
Receive (answer)
Start \xfe
Projector address \x01
Command[0] \x67
Data[0] \x0b
Checksum \x73
Stop \xff
projector status, read