Programming
20
TTPM3 Printer/Encoder–Technical Manual
0705
4 PROGRAMMING
4.1 Syntax
•
A command string always starts with an exclamation mark (ASCII 33 or HEX 21)
serving as command identifier. The exclamation mark must be at the first position of
the line, that is, directly after a CR LF. Otherwise it will not be recognizes as command
identifier.
•
The characters immediately following the “
!
” (21H) form the actual command to the
printer. The command consists of 1–3 characters and is followed, when applicable, by
a sub command, formatting commands, and data separated by space characters as
shown in Figure 11.
•
Carriage Return and Line Feed end each command.
Command identifier
Command (1 to 3 characters)
Sub command
Formatting commands
separated by spaces
Data enclosed in
quotation marks
Space character
(ASCII 32 or HEX 20)
Only used with some commands
Graphical data starts directly without any quotation mark
and ends after the specified number of bytes
New line = CR LF
(ASCII 13 10
or HEX 0D 0A)
SW97119
1
1
1
2
2
1
Figure 11. Command syntax
4.2 Initialization after power OFF
To initialize the printer after power ON you just send a clear command (!C) and the printer
is ready for use.
NOTE!
– If no clear command has been received, the first !P after power ON initializes
the printer. No ticket is produced from the data sent before this !P.
