３５
ACCURA9/9L INSTRUCTION MANUAL
10.1 RS232C Communication
The shot control procedure and communication example at
RS232C
are as follows:
※
Refer
7.6 ＲＳ２３２Ｃ mode
about RS232C communication.
RS232C Shot Control Procedure
One example for communication flow of the setting data is stated below:
①
The sender transmits the signal (transmission request signal ‘ENQ’) to the
receiver.
②
The receiver transmits the signal to receive the transmission (EOT).
③
On receiving the signal to receive, the sender transmits the data (N bite).
④
The receiver carries out ‘Check-sum’ calculation after receiving the data. After
completing of receiving the data, the acknowledgment signal (ACK) is transmitted. If
there are some errors, Non-acknowledgment signal (NAK) is transmitted.
⑤
Receiving the acknowledgment signal by the sender is the completion of transmission.
The sender stops the transmission because of timeout when the sender does not receive the
acknowledgment signal or Non-acknowledgment signal within 10 seconds after transmitting the
transmission request signal. The receiver stops the transmission by sending Non-acknowledgment
signal because of timeout when the receiver does not receive the all data within 10 seconds after
receiving the signal to receive.
Non-acknowledgment signal is transmitted by the receiver on the following cases:
Case 1.: At the above
②
case, not stand prepared to receive.
Case 2.: During receiving the data, the status error, the time over error or check-sum error
occurs.
To Next Page
Loading...
Need help?
General