Casio PX-410R

43
The same packet is resent when a checksum mismatch or incompatible data structure error is detected.
Data Receiver Data Sender Operation
BDS → Data Send
← BSY Busy
(Send Canceled)
Data Receiver Data Sender Operation
HDR → Send Request
← BSY Busy
(Send Canceled)
Data Receiver Data Sender Operation
HDS → Data Send
← BSY Busy
(Send Canceled)