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S5-115U Manual
Connection Cleardown
When all characters in the Send buffer have been transmitted, the transmitter initiates
connection cleardown by transmitting in succession the control characters DLE (10
and, if specified, BCC.
Transmitter
(BCC)
Possible Reactions from the Receiver
Receiver sends a DLE control character prior
to time-out (QVZ)
Receiver sends a NAK control character or any
other character (except DLE !) prior to
time-out
or
the receiver does not send any character prior
to time-out
Example of Error-Free Transmission
Transmitter
CPU 944 with
3964R line procedure
STX (02
)
H
1st char.
.
.
.
nth char.
DLE (10
)
H
ETX (03
)
H
BCC
EWA 4NEB 811 6130-02b
ETX DLE
Receiver
DLE (10
)
H
DLE (10
)
H
Communications Capabilities
Receiver
Explanation
The frame was received without error and the
connection cleared down.
If the specified number of transmission
attempts is greater than 1, the frame is retrans-
mitted (number of attempts: word 8 in the
parameter list). If the last attempt is un-
successful, the transmitter aborts the trans-
mission and flags an error in the CBS.
), ETX (03
)
H
H
12-45
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