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GEK-36150
CTL-E, ENO (Enquiry) - This code causes an action if
your Printer has the Answerback or Line Control
option. Receipt of ENO triggers the answerback
message that can contain up to 20 characters. If the
Printer has the Line Control option, the status of the
Printer is indicated by the transmission of the ACK or
NAK code (following the Answerback
messa~e)
and
the line turns around. Status excludes the
Motor
Off" state of the Printer.
CTL-F, ACK (Acknowledgment) - This code causes
an action only if the Printer has the Line Control
option. Recognition of ACK turns the line around. A
Printer transmits ACK as a response to ENO if the
Printer is not out of paper, and it is capable of
receiving a message.
CTL-G, BEL (Bell or Alarm) - When recognized, this
code
causes
an
audible
alarm
to
sound
for
approximately 0.5 seconds. Any BEL code received
during the 0.5 second alarm will be ignored; i.e.,
successive BEL codes do not generate a cumulative
time value of tone.
CTL-P, OLE (Data Link Escape) - OLE is used in
combination with the following codes. These codes
cause an action only if the Printer has the Line
Control option.
D LE EQT - When recognized, these codes
initiate the automatic disconnect, and the
Printer is placed in the "Standby" mode. (Data
Terminal Ready signal (circuit CD) to the Data
Set turns off for 67 milliseconds.)
-
D LE ? - When these codes are received, the
Printer assumes a "Wait Before Transmit"
condition, and the READY lamp goes out. The
Printer automatically responds to D LE ? with
the code ENO. Subsequent receipt of ACK
lights the READY lamp.
CTL-0, RDR ON, DC1 (Reader On) - The Reader On
code is used, when received, to turn on an optional
reader device.
CTL-R, PCH ON, DC2 (Punch On) - The Punch On
code is used, when received, to turn on an optional
recording device.
CTL-S, RDR OFF, DC3 (Reader Off) - The Reader
Off code is used, when received, to turn off an
optional reading device. A jumper change can be
made so that DC3 is ignored when received.
CTL-T, PCH OFF, DC4 (Punch Off) - The Punch Off
code is used, when received, to turn off an optional
recording device.
CTL-U, NAK (Negative Acknowledgment) - This code
causes an action only if the Printer has the Line
Control option. Receipt of NAK turns the line
Operation
around,
I ights
the
INTERRUPT
lamp,
and
de-activates the keyboard. The Printer transmits NAK
on receipt of ENO if the Printer is out of paper and is
used with a data set which does not disconnect when
the Data Terminal Ready lead (circuit CD) is turned
OFF.
HORIZONTAL TABULATION (OPTION)
TAB SET
A tab is set when the "Escape" and
11
1
11
(HT set)
codes are generated from the keyboard or received
from a remote source. Any number of tabs can be set
on a print line.
TAB CLEARING
All tabs are cleared when the "Escape" and
11
2'
1
(HT
CLR) codes are generated from the keyboard or
received from a remote source.
NOTE
When AC input power is turned off, all tabs
are cleared. The tabs do not clear when the
Printer goes to the "Standby" status.
OPERATING CHARACTERISTICS
When the HT key is pressed or a Horizontal Tab
- control code is received, the print position moves to
the next tab set to the right. If no tabs are set, the
print position moves to one position past the last
print position.
When the RETURN key is pressed or a Carriage
Return control code is received, the print position
moves to the tab set farthest left. This tab becomes
the left margin. If no tabs are set, the print position
moves to 1 (one).
VERTICAL TAB AND FORM FEED (VTFF),
OPTION
DESCRIPTION
This option allows the Printer to rapidly feed paper
(6 3/4 inches per second) to a predetermined line
position upon recogniton of a locally or remotely
generated form feed (FF) or vertical tabulation (VT)
code.
A programmable disc is used to program the VTFF.
The Printer can have VTFF for use with forms of 8, 8
1 /2, or 11 inches. The corresponding discs contain
48, 51, and 66 divisions respectively. Figure 3-6
shows the disc for use with the 11 inch form. It has
66 divisions corresponding to the number of print
lines on a 11 inch sheet of paper (6 print lines per
inch).
3-9
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