Canon RE-350 Control Interface Commands Manual page 28

Zoom: Request Position
• Function:
Requests the present position of the zoom lens from the RE-350.
• Timing of the "C-response Packet" sent to the PC:
Right after this command is accepted by the RE-350.
• The parameter of the "C-response Packet":
The present zoom lens position data:
MSH:$00 fixed
• The maximum operation time (msec):
100 millisecond
• Command format:
Header ID number
$10 $ 8 *
LSH:$00 ~ $FF
Command
$ 0 4
Parameter MSH Parameter LSH
$ 0 0 $ 0 0
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