COMMUNICATIONS
6.7.4. 11
6.7,4,12
6,7,4, 13
6,7.4,14
6,7,4,15
VER.V09F
SECTION 6,7
respond with an ENQ. WACK is also a two character sequence,
WACKs may be sent indefinitely at 3 second intervals to stop
further transmission.
NAK (15H) - Negative Acknowledge
This character informs the transmitting station that a message
was received
in error. It causes retransmission of the
erroneous message.
DLE (10) - Data Link Escape
Data link escape is used to provide various line control
characters, e.g. WACK, ACKO, ACK1 and RVI,
RVI (100,7CH) - Reverse Interrupt
Reverse interrupt is used as a positive acknowledgement (in
place of ACKO or ACK1), However, it requests termination of the
current message, due to a high priority message needing to be
sent from the receiving station,
HUNTER will never generate an RVI but will respond to one,
DLE EOT (10H,04H) - Disconnect Sequence
This sequence informs the receiver that the transmitter is
shutting down.
IRS (1EH) - Intermediate Record Separator
This character is used as a delimiter in 3780 configurations,
Reception of this returns a CR (carriage return),
PAGE 6 - 23
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