Appendices
■Phase 2 with a sequence of DLE EOT and IDs
If the sending station receives a sequence of DLE EOT and IDs anytime during phase 2, it shifts to phase 3 to terminate the message transmission abnormally. Even if phase 3 terminates normally, the transmission results in an abnormal end.
Sending station
Receiving station
DLE EOT and IDs
Occurrence of an error
To phase 3.
■Phase 2 with iterated transmission of DLE ENQ and IDs due to no response or invalid response
If the sending station receives no response or any invalid response from the receiving station in response to a transmission block sent, it iterates sending of a sequence of DLE ENQ and IDs at
If the sending station receives a sequence of DLE ACK and IDs before sending the sequence of DLE ENQ and IDs 59 times, it continues the subsequent message transmission.
Sending station
0.5second
0.5second
Data text m
DLE ENQ and IDs
DLE ENQ and IDs
Receiving station
DLE ACK and IDs
Data text m+1
191
