Transmission Control Sequences - Denso BHT-4000 User Manual

3.3.4 Transmission Control Sequences

Shown below is a typical message transmission sequence supported by the BHT-
protocol. This sequence does not include transmission errors or negative responses.
Establishment of
Data Link
(Phase 1)
Data Transmission
(Phase 2)
Release of Data
Link
(Phase 3)
Chapter 3. Communications Operations of BHT-4000
Sending
Station
ENQ
S
O
Heading text
H
S
T
Serial number
X
S
T
Serial number
X
S
T
Serial number
X
EOT
85
E B
T C
X C
E
T
Data text 1
X
E
T
Data text n-1
X
E
T
Data text n
X
Receiving
Station
ACK
ACK
B
C
C
ACK
B
C
C
ACK
B
C
C
ACK
ACK