Denso BHT-7000 - Manual (Page 166)

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■ Abnormal termination of phase 2 (Abort of phase 2)
If the sending station receives no sequence of DLE ACK and IDs from the receiving
station after sending a sequence of DLE ENQ and IDs 59 times in succession, it
sends a sequence of DLE EOT and IDs to the receiving station after 0.5 second from
the 59th sequence of DLE ENQ and IDs and then aborts this transmission abnor-
mally.
Sending
station Receiving
station
Abnormal
termination
Phase 3: Release of Data Link
■ Normal phase 3
The sending station transmits a sequence of DLE EOT and IDs to the receiving
station. Upon receipt of a sequence of DLE ACK and IDs from the receiving station,
the sending station terminates the message transmission normally and releases
the data link.
Sending
station Receiving
station
Normal
termination
DLE ENQ and IDs (1)
DLE ENQ and IDs (2)
DLE ENQ and IDs (59)
DLE EOT and IDs
0.5 second
0.5 second
DLE ACK and IDs
DLE EOT and IDs
0.5 second