Lexmark 33S0300 Technical Reference - Page 61

Commands, Command Structure, Command Parameters

Page 61 highlights

2-49 PCL Table 2-13: Control Codes (Continued) Code Dec Hex Function Result CR 13 0D Carriage Return Moves the cursor to the left margin SP 32 20 Space Moves the cursor to the right one column SI 15 0F Primary Font Selects the primary font SO 14 0E Secondary Font Selects the secondary font Commands PCL emulation commands are multibyte strings (also known as "escape sequences") that begin with the Escape control code (ESC, ←, decimal 27, or hexadecimal 1B). The ESC control code notifies the printer that the characters that follow are to be interpreted as part of a command and are not control codes or data to be printed. Command Structure Most PCL emulation commands have the following structure: ESC & a # C Spaces have been added to this example for readability. The command parameter variables are indicated by a number sign (#). Table 2-14: Description of Command Structure Element ESC & a # C Description Decimal 27 or hex 1B Parameterized character from American National Standard Code for Information Interchange (ASCII) table (ranging from 33 to 47 decimal) Group character from ASCII table (ranging from 96 to 126 decimal) that specifies a group type of control Decimal character string value within specified numeric ranges; may be preceded by a + or - sign and contain a decimal point Termination character from ASCII table (ranging from 64 to 94 decimal) Command Parameters A command parameter sets the value for a command. This value stays constant until either a different value resets the command or a command resets the printer to the default values. For example, after the printer receives a command that selects a right

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PCL
2-49
Commands
PCL emulation commands are multibyte strings (also known as “escape sequences”)
that begin with the Escape control code (
ESC
,
, decimal 27, or hexadecimal 1B). The
ESC
control code notifies the printer that the characters that follow are to be interpreted
as part of a command and are not control codes or data to be printed.
Command Structure
Most PCL emulation commands have the following structure:
ESC
& a # C
Spaces have been added to this example for readability. The command parameter
variables are indicated by a number sign (#).
Command Parameters
A command parameter sets the value for a command. This value stays constant until
either a different value resets the command or a command resets the printer to the
default values. For example, after the printer receives a command that selects a right
CR
13
0D
Carriage Return
Moves the cursor to the left margin
SP
32
20
Space
Moves the cursor to the right one column
SI
15
0F
Primary Font
Selects the primary font
SO
14
0E
Secondary Font
Selects the secondary font
Table 2-14:
Description of Command Structure
Element
Description
ESC
Decimal 27 or hex 1B
&
Parameterized character from American National Standard Code for Information
Interchange (ASCII) table (ranging from 33 to 47 decimal)
a
Group character from ASCII table (ranging from 96 to 126 decimal) that specifies a
group type of control
#
Decimal character string value within specified numeric ranges; may be preceded by
a + or - sign and contain a decimal point
C
Termination character from ASCII table (ranging from 64 to 94 decimal)
Table 2-13:
Control Codes (Continued)
Code
Dec
Hex
Function
Result