Microcom 324M Operator's Manual page 121

Chapter 8
The following format is used to generate a PDF-417 bar code:
^D77<CR>
:Text Data^\
Number_of_Rows<CR>
Number_of_Columns<CR>
Rotation<CR>
ECC_Percent<CR>
ECC_Level<CR>
Aspect_Ratio<CR>
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 begin with ":" and be
terminated with the "^\" control code. The text data may include carriage returns and other
control codes.
Number_of_Rows<CR>
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<CR>
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<CR>
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<CR>
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. Valid parameters are 0 - 400.
This parameter has to be set to an invalid number 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<CR>
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 an invalid number. Refer to Table 8-4 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<CR>
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 1:2. Valid ratios are 2:1,
1:1, 1:2, and 1:3. A carriage return character must be used to terminate this field.
324M/424M Operator's Manual - 880026-1001
Bar Codes
8-9