Dymo Costar 400 User Manual download pdf (Page 14)

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a decimal value of 27.) With this information, you can construct

the following program to print ‘Hello World’ in a 7-characters-

per-inch font.

OPEN “COM1:9600,n,8,1” FOR OUTPUT AS #1

PRINT #1, CHR$(27); “T”;

PRINT #1, “HELLO WORLD”

In a nutshell, that’s all there is to programming for the

LabelWriter. Any formatting or special effect that you may need

for your output can be specified simply and easily by sending the

appropriate command characters and the data to be printed.

Below, we’ll cover the ins, outs and general information that you

should know before programming the LabelWriter.

Resetting the Printer

Each print job should begin with a printer reset command. This

ensures that the printer always begins in a known state.

The command characters used to reset the LabelWriter are ESC

(decimal value 27) and * (decimal value 42).

Command Parameters

When sending a command, all of the command characters and

parameters that make up a command must be sent. This is

especially important when using the bar code and graphics

commands. Sending too few characters to fill the required

parameters for a command will either cause the command to fail

or result in subsequent data being lost.

Character Evaluation

Most of the parameters that are sent to the LabelWriter are

evaluated based on their decimal value. It is very important to

have a good understanding of what this means.

The ASCII character that is represented by a ‘3’ does not have a

decimal value of 3 (the character '3's decimal value is 51, as listed

in the ASCII table in Appendix G).

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Dymo Costar 400 User Manual Page 14