Selecting Protocol Codes - SATO GL408e Programming Reference Manual

Unit 2: Programming Concepts

SELECTING PROTOCOL CODES

Protocol codes are the special control characters that prepare the printer to receive instructions.
For example, the <ESC> character tells the printer that a command code will follow and the
<ENQ> character asks for the printer status.
There are two pre-defined different sets of Protocol Control codes to choose from. Each set is
made up of six special characters. The Standard Protocol Control codes are non-printable
characters, and the Non-Standard Protocol Control codes are printable characters. The Non-
Standard set may be useful on host computers using protocol converters or in an application
where non-printable ASCII characters cannot be sent from the host.
This manual uses the Standard Protocol Control codes for all of the
examples. Alternately, the user may define and download a set of custom
Protocol Control Codes (see Appendix D).
PROTOCOL CODES
CONTROL
CHARACTER
STX
ETX
ESC
ENQ
CAN
Off-Line
SATO GL4xxe SBPL Programming Reference
STANDARD
DESCRIPTION
DSW2-7 OFF
02 Hex Data start
03 Hex Data end
1B Hex Command Code to follow
05 Hex Get printer status, Bi-Com Mode
18 Hex Cancel print job, Bi-Com mode
40 Hex Take printer Off-Line
Page 2-3