11
(5) Data frame error (Master transmission)
① Session starts when ENQ is sent from master to slave.
② Slave acknowledges by returning ACK to master.
③ Master sends data.
④ For some reason, slave does not receive data.
⑤ Master does not receive acknowledgment to the send code and repeats the sequence every 3
seconds for 3 times.
⑥ If unsuccessful after 3 attempts, master aborts the sequence and ends communication.
HITACHI
Master (Machine)
1
2
3
ENQ code (05H)
ACK code (06H)
Send data (ASCII code)
Send data (ASCII code)
Send data (ASCII code)
4
5
Send data (ASCII code)
6
3 second
elapse
3 second
elapse
3 second
elapse
Slave
(KP-F145WCL)
Summary of Contents for KP-F145WCL
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