Canon RE-350 manual RTS flow control timing chart, Mark Duration period Min Max, 44ms 300ms

6.2 RTS flow control timing chart

The PC can suspend the transmission of the “C-response Packet” data for the period less than 1000 milliseconds from the RE-350by setting the RTS signal to OFF.

PC SIDE SIGNAL

			T6
RTS		1	3
CTS
TXD	Command		T7
		T5

RXD

C- Response

2 4

Mark	Duration period
	Min.	Max.
T5 (9600bps)	3.44ms	300ms
(2400bps)	4.58ms	300ms
T6	--	1000ms
T7	--	200ms

1If the PC wants to suspend the transmission of the “C-response Packet” data stream on its half, the PC should set the RTS line to OFF.

2Once the RE-350recognizes the RTS of the PC is OFF, the RE-350will hold the transmission of the “C-response Packet” data after the remaining maximum 3 byte data in its communication buffer is transmitted. The application software on the PC can recognize if the RE-350is operating properly. The time period required for transmitting the remaining data in the buffer will depend upon the communication speed of the RS232C I/F.

3When the PC wants to resume the transmission, the PC should set RTS to ON immediately. The longest time period to be able to hold the transmission is 1000 milliseconds. If the PC fails to set the RTS line to ON in 1000 milliseconds, the RE-350will stop the sequence to send the “C-response Packet”. The PC can not receive the remaining C-response data any more.

4Once the RE-350recognizes the RTS signal comes back to ON within 1000 milliseconds, the RE-350will resume the transmission of the “C-response Packet” data.

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