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(6） Transmission frame error (Master receive)
HITACH
Slave
(HV-F32SCL)
① Master sends read command.
② Slave returns ACK code to acknowledge read command.
③ Slave sends read data to master.
④ For some reason, master fails to receive read data.
⑤
Slave fails to receive acknowledgment of read data and attempts to resend every 3 seconds for 3
times.
⑥
After the third failure, slave aborts the sequence and ends communication.
Read command (ASCII code)
2
3CCD
1
Read data (ASCII code)
3
Read data (ASCII code)
5
Read data (ASCII code)
Read data (ASCII code)
6
ACK code (06H)
1
4
1
3 second
elapse
Master (Machine)
3 second
elapse
3 second
elapse
18
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