Casio CDP-235R User Manual download pdf (Page 31)

Data Receiver Data Sender Operation

(External Device) (This Instrument)

HBR -----> Send Request

(Optional)

<----- HBS Data Send

ACK -----> Acknowledge

<----- HBS Data Send

ACK -----> Acknowledge

:

:

ACK -----> Acknowledge

<----- EOD End of Data

:

Other Sub Session

:

<----- EOS End of Session

The packed with the same packet number is resent when a checksum mismatch or incompatible data

format error is detected.

Data Receiver Data Sender Operation

(External Device) (This Instrument)

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 Sub Session

:

<----- EOS End of Session

Session terminates if ERR is detected a number of times.

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