Zebra A300 Specifications download pdf (Page 45)

Exercise#2- Downloading and Printing

Graphic Images

This exercise illustrates how to create a hexadecimal graphic image

and print it as part of your label.

In order to store graphic images, sufficient memory must be allocated

(reserved) for them. Memory for storing graphic images is allocated

“on the fly” as needed. The graphic images can then be recalled and

integrated with additional label data without downloading the entire

image each time a label is printed. Graphic Images are downloaded

using the ~DG (Download Graphic) instruction along with appropri-

ate parameters to indicate the size of the graphic being downloaded.

Graphic images may be created using a drawing or painting program

which creates files in the .PCX format, such as PC Paintbrush. These

files must then be converted to ZPL II graphic format .GRF (pure

hexadecimal data without headers or other extraneous information) for

use as part of a label format. You can use the ZTools™ for Windows

program (available from Zebra) to convert the .PCX graphic format

into the pure hexadecimal .GRF graphic format. Hexadecimal data

may also be directly input as part of a ZPL II program.

The ~DG instruction requires parameters indicating the size of the

graphic image. The format for this instruction is:

~DGd,o,x,t,w,DATA

where

~DG = Set Printer to Download Graphic Mode

d = Destination Device to Store Image

o = Name of Image, 1-8 Alphanumeric Characters

x = Extension, 3 Alphanumeric Characters

{Fixed. Will always be .GRF}

t = Total Number of Bytes in Graphic

w = Number of Bytes Per Row

DATA = ASCII Hexadecimal String that Defines Image

36 CHAPTER 4

ZPL II Programming Exercises

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Zebra A300 Specifications Page 45