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The Standalone Application program is stored in the printer memory and can
accept input from a PS/2 keyboard, bar code scanner, or other serial devices
such as an electronic scale. These programs may use the printer‟s LCD to
prompt for user input and may also include databases. Unlike other bar code
printers that allow basic static forms to be loaded in the printer, PAL
TM
Print and
Program capable printers provide advanced abilities. Examples of these
advanced capabilities are:
Ability to operate on line from host or off line in stand-alone mode
Ability to range check user input
Ability to combine data from multiple fields into a single bar code
Ability to access database stored in printer
Ability to perform math calculations (addition, subtraction, multiplication,
division, etc.)
Ability to perform logical calculations (equal to, less than, greater than, etc.)
Shown below is an example where a stand-alone PAL
TM
application and
database is stored in the printer. Operator input combined with internal database
information is used to create a label. For example, this application could request
a part number and physical dimensions of a particular part by prompting for this
information on the printer LCD. After the operator inputs the requested
information on the PS/2 keyboard, the printer could calculate the volume, and
then based on the part number lookup the part description in a database to
produce a label.
Keyboard
PAL Printer
Operator
Input
Keyboard Data
PAL
Interpreter
Printed
Document
PAL Standalone
Application
Printer
Flash Memory
Local
Database