PCL
2-33
Command Structure
This section introduces the different types of PCL emulation commands and their
structure, or syntax. It also demonstrates how you can link commands to abbreviate
them.
Control Codes
Control Codes are single-character instructions.
Commands
PCL 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.
Table 2-18: Control Codes
Code Dec Hex Function Result
BS 8 08 Backspace Moves the cursor toward the left margin one horizontal space equal to the
last printed character
HT 9 09 Horizontal Tab Moves the cursor to the next defined tab stop
LF 10 0A Line Feed Advances the cursor to the same horizontal position on the following line
as determined by either the Vertical Motion Index (VMI) or Set Line
Spacing command
FF 12 0C Form Feed Advances the cursor to the same horizontal position at the top margin of
the next page
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
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