Microcom 438 - Manual (Page 129)

Bar Codes Chapter 8
8-12 438 Operator’s Manual - 880052-0100
The following format is used to generate a PDF-417 bar code:
^D77
:Text Data^\
Number_of_Rows
Number_of_Columns
Rotation
ECC_Percent
ECC_Level
Aspect_Ratio
This format is then followed by the placement instructions and text placeholder.
:Text Data^\
This parameter is where the desired data is placed and must be terminated with the “^\[“ or
0x1C control code. The text data may include carriage returns and other control codes.
Number of Rows
This parameter specifies the number of rows used for rendering the PDF-417 symbology.
The PDF-417 symbology may have as few as 3 or as many as 90 rows with a default setting
of 90. A carriage return character must be used to terminate this field.
Number of Columns
This parameter specifies the number of columns used for rendering the PDF-417
symbology. The PDF-417 symbology may have 1 to 30 columns with a default setting of 30.
A carriage return character must be used to terminate this field.
Rotation
This parameter controls the rotation of the rendered PDF-417 symbology in 90-degree
increments. The valid arguments for this parameter would be 0, 90, 180 or 270 with the
default being set to 0. A carriage return character must be used to terminate this field.
ECC_Percent
The ECC_Percent parameter is used to set the percentage of overall data dedicated to the
Error Correction Control (ECC) of the PDF-417 symbology. This parameter has to be set to
0 if the ECC# method is desired. The default ECC% is set to 0. A carriage return character
must be used to terminate this field.
ECC_Level
The ECC_Level parameter is used to set the level of error correction of the PDF-417
symbology with a default value set to 0. This parameter can only be used if the ECC%
parameter is set to 0. Refer to Table 17 for the valid ECC_Level values and their equivalent
correction code words. A carriage return character must be used to terminate this field.
Aspect Ratio
This parameter is used to adjust the aspect ratio of the PDF-417 symbology. The value is
entered in ratio format (height: width) and has a default value of 2:1. A carriage return
character must be used to terminate this field.