Casio XW-P1 - Page 59

Data Receiver Data Sender Operation
(External Device) (This Instrument)
SBS(HBR) -----> Session Start Request
<----- ACK Acknowledge
HBR -----> Send Request
(Optional)
<----- HBS Send Packet
ACK -----> Acknowledge
<-???- HBS Send Packet (Note1)
ERR(Format Error) -----> Format Error
<----- HBS Resend Packet
ACK -???-> Acknowledge
<----- ERR(Format Error) Format Error
ACK -???-> Acknowledge
<----- ERR(Format Error) 2 consecutive format
errors(*Note2)
ACK -----> Acknowledge
<----- HBS Send Packet
:
Note1 : “<-???-” or “-???->” indicates transfer failed.
Note2 : Number of retries that exceeds the retries stipulated by Handshake Max Retry explained under “20.2 System
Exclusive Protocol Parameter”.
18.3.11 Example: Session Generating a CRC Error
Data Receiver Data Sender Operation
(External Device) (This Instrument)
SBS(HBR) -----> Session Start Request
<----- ACK Acknowledge
HBR -----> Send Request
(Optional)
<----- HBS Send Packet
ACK -----> Acknowledge
<-???- HBS Send Packet
ERR(CRC Error) -----> CRC error
<-???- HBS Resend Packet
ERR(CRC Error) -----> 2 consecutive CRC
errors(*Note)
<----- HBS Resend Packet
ACK -----> Acknowledge
<----- HBS Send Packet
:
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