Operation - ADEMCO 6220 User Manual

Operation

Connecting and 1. Attach the appropriate cable between the
Powering Up printer and your computer. The connector on
Your Printer the printer side is "keyed" so that you can
not plug the cable in the wrong way. This
means that the pins should be positioned
so that a slight pressure will seat the cable
properly. Do not force the pins in. Doing so
could damage the cable.
2. Plug the power cord into the back of the
For DC modified units
printer. Plug the transformer into an appro
supplied with cable,
priate AC outlet. The unit will power up
connect positive voltage
automatically and print R R R R R eady
to striped wire.
means the printer is ready to print.
The paper feed switch on the printer is a rocker
type switch. Push the left side of the rocker
switch to toggle the printer on and offline.
Push the right side of the switch to advance
the paper.
Your printer is now ready for print-
ing. The printer stores characters for print-
ing until one of two things happens:
1. Its line buffer is filled.
2. It receives a line feed (hexadecimal 0A) or a
carriage return (hexadecimal 0D) code.
When (1) or (2) occurs, the printer prints out the
contents of its line buffer. If the buffer is empty
when the carriage return is received, the printer
simply advances the paper one line, leaving a
blank line in the printout.
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eady eady. . . . . This eady eady
be convenient. If such a large sheet of paper is
not available, you could divide your pattern in
half and work with 72 grid boxes across. Divide
up your grid paper by drawing a heavy line down
every 8 boxes across. Now fill in each box of
the grid that you want to be printed. Now do
the following procedure to compute the
eighteen values which describe your desired bit
pattern.
Imagine placing the number sequence over
each of the first eight grid boxes.
Now add together all the numbers above the
boxes which are filled in or have a dot as in the
example above. In our example, we would have
2 + 16 + 32 which equals 50. '50' then would
be the first entry of a data statement which
would be followed by seventeen more numbers
computed in the exact same manner as the
example.
Once you have the eighteen values in a data
statement, you need to simply run a program
which PRINTS a CHR$(18) followed by the data
value read from the data statement. Don't for-
get to end all of your print statements with semi-
colon. This will prevent carriage returns
CHR$(13) from being sent, which would
become part of the eighteen data values for
which the printer is waiting.
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