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Mark Duration period
Min. Max.
T5 (9600bps) 3.44ms 300ms
(2400bps) 4.58ms 300ms
T6 -- 1000ms
T7 -- 200ms
The PC can suspend the transmission of the “C-response Packet” data for the period less than 1000 milliseconds from
the RE-350 by setting the RTS signal to OFF.
PC SIDE SIGNAL
Command
T5
T6
T7
C- Response
6.2 RTS flow control timing chart
RTS
If 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.
Once the RE-350 recognizes the RTS of the PC is OFF, the RE-350 will 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-350 is 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.
When 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-350 will stop the sequence to send the “C-response Packet”. The PC can not receive the
remaining C-response data any more.
Once the RE-350 recognizes the RTS signal comes back to ON within 1000 milliseconds, the RE-350 will resume
the transmission of the “C-response Packet” data.
3
4
1
2
3
4
1
2
CTS
TXD
RXD