Appendix D

Defaults and DIP Switches

This appendix lists all of the default settings and lists and explains the settings of all the DIP switches.

Default and Initialization Settings

The T-750 can be initialized (returned to a fixed set of conditions) in three different ways: when it is turned on, when it receives an INIT signal at the parallel interface (pin 31 becomes LOW), and when it receives the ESC @ command.

The following conditions are always reset:

•The print head returns to the home position.

•Interface signals are reset, and the printer is put on line.

•The current print line is cleared.

•Margins and vertical tab settings are cleared, line spacing is set to l/6-inch, horizontal tabs are set at every eighth position and vertical tab channel 0 is selected.

•The page length and skip-over-perforation are set according to DIP switches 2-1 and 2-3, and the top of form position is set to the current line.

•The ROM characters are selected, and the Epson mode character table and international character set are reset according to DIP switches l-3 and 1-6 to 1-8.

In addition, when the printer is initialized by turning on the power or by an INIT signal, the data buffer is cleared of all text.

ESC @ resets the typestyle to the current SelecType settings, but the other two methods reset the typestyle according to the DIP switches. Also, ESC @ does not check whether any DIP switches have been altered since the printer was turned on; instead it uses the old settings.

Defaults and DIP SwitchesD - 1