Section 5. Pro
rammin
Reference
OPEN
“COM1:9600,E,8,1,CS,DS”
AS #1
This
sets
the
RS232C
communication
parameters
of
the
host
PC’s
COM1
port
fo
9600
baud,
Even
parity,
8
Data
bits,
1
Stop
bit
and
directing
the
port
to
ignore the
CTS
and
DSR
control
si
nals.
3.
You
may
want
to
minimize
keystrokes
and
program
size
by
assigning
the
<ESC>
characte
to
a
strin
variable
since
this
characte
is used
uite
often.
The
following
two
examples
in
BASIC
show
a
typical
example
using
these
hints.
Both
of
these
exam
les
use
the
Standard Protocol
codes.
P
intin
with
the
Parallel
Port
5 REM Parallel Example Identifies the program as a parallel port
print label. The
“REM”
prevents this data
from being sent to the printer and
displays it only on the screen.
10 E$=CHR$(27) Sets the
“E$”
string as an <ESC>
character
20 WIDTH
“LPT1:”,255
Sets the width of the output to 255
characters
30 LPRINT E$;"A"; Sends an
“<ESC>A”
command code to
the LPT1 parallel port
40 LPRINT E$;"H400",E$;"V100";E$;"WL1SATO"; Sends the data
“SATO”
to be to be placed
400 dots horizontally and 100 dots
vertically on the label and printed in the
“WL”
font.
50 LPRINT E$;"Q1"; Instructs the printer to print one label.
60 LPRINT E$;
“Z”;
Tells the printer that the last command
has been sent. The printer can now
create and
rint the
ob.
Printin
with
the
RS232C
Port
5 REM RS232 Example Identifies the program as a RS232C port
print label. The
“REM”
prevents this data
from being sent to the printer and
displays it only on the screen.
10 E$=CHR$(27) Sets the
“E$”
string as an <ESC>
character.
20 OPEN
“COM1:9600,N,8,1,CS,DS”
AS #1 Opens the COM1 port for output and
sets the parameters as 9600 baud, No
parity, 8 Data bits, 1 Stop bit and
instructs the port to ignore the CTS and
DSR control signals.
30 PRINT #1,CHR$ (2); Sends an <STX> (ASCII Code a
decimal
“2”)
to the printer instructing it to
prepare to receive a message.
50 PRINT #1,E$;"A"; Sends an
“<ESC>A”
command code to
Print Port #1 opened by statement 20
above.
SATO
“Se”
Print En
ines Pa
e 5-3
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