Casio CTK-691 Manual de usuario descargar pdf (Pagina 40)

40

Data send is canceled when no acknowledgement (ACK) is 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

HDE → Error

← HDS Data Resend

:

:

HDE → Error

← EOD Data End

Data Receiver Data Sender Operation

HDR → Send Request (Optional)

← HDS Data Send

HDA → Acknowledge

← HDS Data Send

HDJ → Rejection

(Send Canceled)

Data Receiver Data Sender Operation

HDR → Send Request (Optional)

← HDS Data Send

HDA → Acknowledge

← HDS Data Send

:

:

HDJ → Data Receive Rejected

(Send Canceled)

Data Receiver Data Sender Operation

HDR → Send Request (Optional)

HDA → Acknowledge

← HDS Data Send

HDA → Acknowledge

← HDS Data Send

:

:

← HDJ Data Send Rejected

(Send Canceled)

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