Vaddio Canon VC-C50i Programmers - Manual (Page 10)

9
3.3 Communication Timing Diagram
Example 1: Basic communication
Computer Side
In case unable to receive the answer to the computer
CTS
RTS
TXD
(Control Command)
RXD
(Answer)
Example 2: Unable to execute the commands due to error
The details are referring to 12.1 Pan Speed Assignment command.
The followings shows the case which causes the error by Pan Speed Assignment command,
when the communication mode isn’t host mode. Pan Speed Assignment commands will cause
the error mode under the condition that the communication mode is not host mode.
After the error generated by Pan Speed Assignment command, the Operation Status Request
command is issued and confirms that the error source isn’t host mode, then the Host Control
command is issued and Pan Speed Assignment command is again executed.
Computer Side
TXD
(Control Command)
RXD
(Answer)
TXD
RXD
execute
Execute Execute
Fail to execute
Power turned on
Always ON
Suspend
execute Command 1
Answer 1
Pan Speed Setting
Busy + Mode Error
Operation Status Request
Operation Status
Host Control Mode
No error (ACK)
Pan Speed Setting
No error (ACK)
Command 2
Answer 2 Answer 2