Printing bar codes using Printer Controls

To print bar codes, you should use SAP (i.e. ABAP, SAPscript, ...) to embed special Printer Controls in the data sent to SAPLPD.

When SAPLPD receives a printer control, like the one below, the BARCODE.DLL prints an appropriate bar code at the current position.

A Printer Control is a set of named values, like;

<ESC> is the ASCII character ESC, 27, hex 1B

Example: This example will print an Interleaved 2-of-5 bar code with check characters for number 0123456789.

The BARCODE.DLL can print bar codes using two methods; graphics or fonts.

The Printer Control values below are used by both methods.

C=<Type>

This value selects the type of bar code (symbology).

Type	Barcode	Note
C=39	Code 39	Code 39 Extended is used automatically.
C=25I	Industrial 2-of-5	Available on request.
C=25L	Interleaved 2-of-5
C=25M	Matrix 2-of-5	Available on request.
C=39E	Code 39 Extended
C=CODA	Codabar
C=93	Code 93	Code 93 Extended is used automatically.
C=93E	Code 93 Extended
C=128B	Code 128 (Subset B)	Subset A, B and C are used automatically.
C=E13	EAN 13
C=E13+2	EAN 13 + 2 Digit
C=E13+5	EAN 13 + 5 Digit
C=E8	EAN 8
C=E8+2	EAN 8 + 2 Digit
C=E8+5	EAN 8 + 5 Digit
C=UA	UPC A
C=UA+2	UPC A + 2 Digit
C=UA+5	UPC A + 5 Digit
C=UCE	UPC E
C=UCE+2	UPC E + 2 Digit
C=UCE+5	UPC E + 5 Digit

P=<Check>

Most bar code types have optional check character or mandatory check characters which must be calculated.

Use P=1 for automatic bar code check character. Use P=0 for no checksum.

If P=0 is used and check character is mandatory (e.g. Code 128) then P=1 is assumed.

D=<Data>

This defines the data to be printed as a bar code. This must the last parameter.

A=<Human Readable>

If A=1 human readable text of the bar code is printed below the bar code. If A=0 then no human readable text of the bar code is printed below the bar code. Default is A=1.

R=<Angle>

If R=90 the bar code is rotated 90 degrees. Other useful values are 180 or 270 degress. Default is R=0.