Denso BHT-4000 User Manual page 102

Phase 3 with no response or invalid response
If the sending station receives no response or any invalid response from the
receiving station in response to the EOT sent, it iterates sending of an EOT at three-
second intervals up to ten times.
If the sending station receives an ACK before sending an EOT ten times, it termi-
nates the message transmission normally and releases the data link.
Sending
station
Abnormal termination of phase 3
If the sending station receives no ACK from the receiving station within three
seconds from the 10th EOT, it terminates the message transmission abnormally
and releases the data link.
Sending
station
EOT
3 sec.
EOT
3 sec.
EOT
ACK
Normal
termination
EOT
3 sec.
EOT
3 sec.
EOT
EOT
Abnormal
termination
92
Receiving
station
Receiving
(1)
station
(2)
(3)
(10)