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PRN608-S
28-03-2003 Page 3-34 of 53
[Description] When the printer controller receives a byte that is –Y to
–2 (Decimal 256-Y to 254) the following data is
compressed data. The number of compressed graphic
bytes is the negative value.
This means:
If Y = -10 (Decimal 246) the next 10 bytes is
compressed data.
The compressed data is as follows.
When a data byte is 0 (no dots activated) the next byte
received is the number of bytes that are 0. All other
data is send as non compressed.
A very few lines cannot be compressed. These will if
you try to compress them be longer than the non-
compressed line. These must therefore be send as
non-compressed data.
3.8.45 Escape sequences, overview.
ESCAPE SEQUENCES,
ASCII FUNCTION
NUL Small Font
SOH Low Font
STX Narrow Font
ETX Normal Font
EOT Wide Font
ENQ High Font
ACK Large Font
BEL Xlarge Font
LF Line Feed
VT Print barcode
FF Forward feed
SO Reverse off
SI Reverse on
DLE Underline off
DC1 Underline on
DC2 Bold off
DC3 Bold on
DC4 Italic off
NAK Italic on
SYN Initialize printer