10
VPL-HW15
CONTROLLER
PROJECTOR
W
aiting T
ime
45
ms
Send Command
Receive Command
(ACK/NAK/REPLY)
Send Command (Infrared Remote Command)
Send Command (Infrared Remote Command)
The command is executed if it’s valid.
Then, the receive command is sent to
the CONTROLLER.
3-3. Communication
Procedure
RS-232C communication sequence is shown below. Each command must be issued by CONTROLLER
and PROJECTOR responses to it.
Fig. 3-1 Command Sequence
It is prohibited that CONTROLLER send another command before receiving the response to the previous
command. Since PROJECTOR executes the command before sending the return data, CONTROLLER
must wait a while before receiving the response. The waiting time depends on the commands. Approxi-
mate waiting time is shown below.
30 to 2500 milliseconds
n
No response is sent for Infrared Remote Command. Therefore, it should be waited for 45 milliseconds
before sending the next command.
