78

EPL Commands

b

Parameters

Details

 

 

 

 

 

 

 

 

p7 = selects data

Accepted Values: 0 or 1

 

 

compaction (compression)

Default Value: 0

 

 

method

 

c0 = Auto-encoding

 

 

 

 

The printer will switch between the three compaction

 

 

modes as needed to create the smallest possible symbol for

 

 

the given data.

 

 

 

 

c1 = Binary mode

 

 

 

 

The printer will encode the symbol in byte compaction

 

 

mode.

 

 

 

PDF417 uses an intermediate data type called a “codeword”

 

to store the characters in the symbol. Each codeword typically

 

consumes a fixed-size portion of the total symbol. More

 

characters inserted into a codeword results in fewer

 

codewords needed to create a symbol. This results in a

 

smaller symbol. To provide efficient data compaction, PDF-

 

417 supports three types of codewords: text, numeric and

 

binary.

 

 

 

Auto-Encoding (c0) data compaction method is set by

 

default, and provides the best compaction. If Binary data

 

compaction (c1) is selected the symbol will typically be

 

larger. Binary data compaction may help to minimize the

 

amount of time it takes a system to scan and decode the data

 

encoded within the symbol.

 

 

 

 

 

 

 

Data Type

 

Compaction (Byte by Byte)

 

 

 

 

 

 

 

 

Text

 

2 Characters per codeword

 

 

 

 

 

 

 

 

Numeric

 

2.93 Characters per codeword

 

 

 

 

 

 

 

 

Binary

 

1.2 Bytes per codeword

 

 

 

 

 

 

Text compaction can be used for uppercase, lowercase,

 

 

numbers, space, carriage return, tab, line feed, and the

 

 

following characters:

 

 

 

 

&,:#-.$/+%*=^;@[\]_’~!"(){}`

 

 

With text compaction, up to two characters can be

 

 

encoded in a single codeword.

 

Numeric compaction can be used for numbers only. Up to

 

 

2.93 characters can be encoded in a single codeword.

 

Byte compaction can be used for any character. But the

 

 

flexibility comes at a price; byte compaction encodes only

 

 

1.2 characters per codeword.

 

 

 

 

 

p8 (pxxx,yyy,mm)=

This parameter is a non-standard implementor of the PDF417

print human readable

and is only recommended for troubleshooting purposes.

 

Additional variables:

 

 

 

p = "p" - parameter identifier

 

xxx = horizontal start location

 

yyy = vertical start location

 

mm = maximum characters per line

 

 

 

 

 

 

14245L-003 Rev. A

EPL Programming Guide

12/16/13

Page 78
Image 78
Zebra Technologies 14245L-003 manual Accepted Values 0 or