Справочник Пользователя для Casio LK-205
35
The packed with the same packet number is resent when a checksum mismatch or incompatible data format error is detected.
Session terminates if ERR is detected a number of times.
Data Receiver
Data Sender
Operation
HBR
→
Send Request (Optional)
←
HBS
Data Send
ACK
→
Acknowledge
←
HBS
Data Send 1
ERR
→
Error
←
HBS
Data Send 2 (Retry 1)
ERR
→
Error
←
HBS
Data Send 3 (Retry 2)
ACK
→
Acknowledge
:
:
:
ACK
→
Acknowledge
←
EOD
End of Data
:
Other subsessions
:
←
EOS
End of Session
Data Receiver
Data Sender
Operation
HBR
→
Send Request (Optional)
←
HBS
Data Send
ACK
→
Acknowledge
←
HBS
Data Send
(Error generated)
ERR
→
Error
←
HBS
Data Send (Retry 1)
(Error generated)
ERR
→
Error
←
HBS
Data Send (Retry 2)
(Error generated)
ERR
→
Error
←
HBS
Data Send (Retry 3)
(Error generated)
RJC
→
Session stopped