12
(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.
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-FM500WCL
KP-FMD500WCL)
HITACHI
Summary of Contents for KP-FM500WCL
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