Chapter 4: Pcl5 Emulation: Hp; One-Dimensional Bar Codes; Defining Characteristics; Command Structure Considerations - Lexmark T656 Technical Reference Manual

4
PCL5 emulation: HP
This section discusses the HP commands implemented in the Forms and Bar Code Card. An
additional Lexmark-specific section is found immediately following this section.

One-dimensional bar codes

With the Forms and Bar Code Card installed, font selection commands in the incoming PCL5 data
stream are analyzed for typeface characteristic values given in the table "PCL5 Function parameter
list" on page 17. If the typeface value is one of those given, special bar code generation firmware
processes the font selection command. If the typeface value is not one of those given, PCL5
emulation proceeds as normal.

Defining characteristics

The following commands let you further define characteristics of the bar code:
Command Characteristic
Esc
Determines location of human-readable text printed with the bar code.
(s#P
Esc
Selects the font used for human-readable text.
(s#H
Esc
Selects bar heights.
(s#V
Esc
Selects bar widths.
(s#B
Esc
Selects space widths.
(s#S
For more information on bar code characteristic parameters and default values, see "PCL5 Function
parameter list" on page 17.

Command structure considerations

These command structure considerations should be followed when implementing bar code
applications using the Forms and Bar Code Card:
• Always specify the typeface parameter, because it directs processing to the bar code
generation firmware.
PCL5 emulation: HP
12