Genicom GEK 00031B - Manual (Page 67)

GEK-00029B 5000 Series Programmer’s Manual 67
DC3 Busy/Select (13H): A received DC3 can be used to remotely deselect
the printer in both serial and parallel interfaces. A serial interface
protocol can be used to transmit a DC3 code to inform the host of a
busy condition.
DEL Delete (7FH): In graphics mode, the delete character is treated as
data. In the edit mode, a <DEL> following a <CR> erases (replace with
a space) previously accepted (buffered, but not printed) characters.
DLE High Vertical Density Graphics (10H): A <DLE> code preceded by
an <ENQ> code anywhere on the same line causes paper motion for
that line to be 1/144 inch instead of the normal 1/72 inch. If not
preceded by an <ENQ> code, the <DLE> is discarded. If there are no
graphics commands (EOT or ENQ) in the line, the DLE code is treated
as an EVFU channel command.
ENQ Normal Density Plot Line (05H): An <ENQ> anywhere in the line
causes the line to be treated as normal-density (60 dpi) plot mode
graphics. An <LF> code causes the line to be printed as one dot row
and the paper is advanced. If there is a <DLE> anywhere in the line,
the paper is advanced by 1/144 inch. Otherwise, the paper is
advanced by 1/72 inch.
EOT High Density Plot Line (04H): An EOT is used to print at 120 dpi.
This code anywhere in the line causes the line to be treated as
high-density plot mode graphics. The line must be terminated with a
CR (printer strap A29 must be OUT). The characters are treated as
dot information and the CR at the end of the line will not cause the
paper to advance. The code causes dots to be printed in the
even-numbered dot column positions. A second line of the same data
with the normal plot mode command (ENQ) is required to fill in the
remainder of the dots and to advance the paper.
ETX End of Transmission (03H): The ETX code is used in the serial
interface with the ACK code as part of an interface protocol. The ETX
is received from the host at the end of a data block. The host then
stops sending data until an ACK is received.
FF Form Feed (0CH): A form feed causes the line to be printed and the
paper advanced to the top of form.
HT Horizontal Tab (09H): An HT is replaced by a space character.
LF Line Feed (0AH): An LF causes the line to be printed and advances
the paper to the next line. If the line is a plot mode line, the paper is
advanced one dot row or not at all, depending on the density of the
plot mode. See Printronix Mode Graphic Density Table.
RS Record Separator (1EH): The RS character is used to signal the
beginning of an EVFU load. [Need replacement wording here for the
margin notes in the tech review.]
NOTE
If a <DC1> or <DC3> control character is received with strap 8
in GenPrtOpts Group 2 set to OUT, the control is treated as a
VFU Channel Command. See Appendix D, General Printer
Options, Group 2 on page 345.