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PTX_SETUP Commands
Overview
The PTX_SETUP commands are a superset of commands which allow the printer to perform several
tasks by parsing commands either stored in flash or sent to the printer by the host. Commands range
from re-routing debug statements to downloading complete printer configurations.
This appendix describes the PTX_SETUP commands available to line matrix printers.
The PTX_SETUP Commands
The PTX_SETUP commands were originally designed for the disk-based laser and thermal printers with
IGPs. However, line matrix printers can still benefit from general functionalities provided by the
PTX_SETUP commands.
Some concepts to keep in mind are as follows:
1. PTX_SETUP commands are not emulation specific. In a system with an IGP, the IGP level emulation
will process the PTX_SETUP commands. In a system without an IGP, the PTX_SETUP commands
will be processed by the base emulation.
2. Since there is no disk on a flash-based printer, DISK_IO commands are now called FILE_IO.
However, for backwards compatibility DISK_IO and FILE_IO are synonymous.
3. The PTX_SETUP command set is case sensitive; all PTX_SETUP commands are in upper case
characters only.
4. The white space separating commands may be any number of spaces and tabs. This allows a
PTX_SETUP file to be formatted for easier readability.
5. The PTX_SETUP and PTX_END command should be followed by a new line character.
6. Any unknown command will terminate the PTX_SETUP processing. The offending command will be
the first line of printed text.
7. Although the original implementation of PTX_SETUP allowed for only a single parameter, separated
from the sub-command by a single semicolon (;) character, the new PTX_SETUP command set
allows for multiple parameters separated by commas, semicolons, spaces or tabs.
General Commands
The original PTX_SETUP commands were implemented on the disk-based legacy laser printers;
however, many commands are general and are also supported on line matrix printers. This section
describes the existing commands which work across all platforms, and provides a general description of
how commands are formed.
Each emulation has modes in which the PTX_SETUP commands could get missed. For this reason, it is
highly recommended that all PTX_SETUP commands be placed between print jobs, rather than
attempting to imbed them within jobs.
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