Casio PX-310 Bedienungsanleitung PDF herunterladen (Seite 37)

37

The same packet is resent when a checksum mismatch or incompatible data structure error is detected.

Data send is canceled when no acknowledgement (ACK) is not received.

The session can be canceled for any reason by sending an HDJ. The HDJ can be sent by the sending device or

the receiving device. The bulk dump session is terminated immediately upon receipt of an HDJ.

Data Receiver Data Sender Operation

HDR → Send Request (Optional)

← HDS Data Send

HDA → Acknowledge

← HDS Data Send

HDA → Acknowledge

:

:

HDA → Acknowledge

← EOD End Of Data

:

Other subsessions

:

← EOS End of session

Data Receiver Data Sender Operation

HDR → Send Request (Optional)

← HDS Data Send

HDA → Acknowledge

← HDS Data Send

HDE → Error

← HDS Data Re-send

:

:

HDE → Error

← EOD End Of Data

:

Other subsessions

:

← EOS End of session

Data Receiver Data Sender Operation

HDR → Send Request (Optional)

← HDS Data Send

HDA → Acknowledge

← HDS Data Send

HDJ → Rejection

(Send Canceled)

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