Advertisement
_ _ _ _ _ _ _ _ _ _ _ _
Making an RS232-C
Interface Cable
DTR
CD
to your computer's pin #20. Refer to
the jumper plug settings on page B-8 for
more information regarding this line.
This is pin #20 on your printer. The Data
Terminal Ready Ii ne is used by most
computers to monitor the printer 's busy
line. If your computer does use pin #20
this way, selecting side "B" on high speed
board jumper plugs SP1 and SP2 will
allow you to connect the computer's
line #20 to th
e
printer 's pin #20 as the
busy line
.
This will
eliminate
jumpering
pins #6 to #20 on the printer 's side. If
your system does not monitor the
printer 's busy line on the DTR line,
consult your computer manual to see
what pin it actually
uses.
*OKI DATA printers provide this SSD signal on pin #11
(or pin #20 if high speed board jumper plugs SP1 and SP2
are on the "B" side) to prevent buffer over-run situations
where several characters or lines of data can be
lost.
The
signal can be negative(-) LOW or positive(+) HIGH when
BUSY by setting serial board function switches 13 and 14
.
(See page B-8.) If your system does not use this signal, all
data sent to the printer when it is busy will be lost.
Here are some common configurations for RS232-C
cabling.
Locate the proper pins on the computer side and you should
have your printer and computer talking in no time
.
C-3
Advertisement
