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Appendix E
Initialization and Default Settings
There are three ways that the printer can be initialized (returned to a
fixed set of conditions).
1. The power is turned
ON.
2. The printer receives an m signal at the parallel interface (pin 31
becomes LOW).
3. Software sends the ESC @ command.
These three kinds of initialization have slightly different effects. In
particular, ESC @ resets the typestyle to the current SelecType settings:
the other two methods reset the typestyle according to the SelecType
Default Settings. These Default Settings are set only by hardware
initialization and are not set by ESC @. Also, ESC @ does not initialize
the printer mechanism, clear-the input data buffer, or clear the
Download character set.
The following conditions are always reset:
l
Present paper position becomes top of page position.
l
The left margin is set to the SelecType Default Settings.
l
The line spacing is set to 1/64nch.
l
The vertical tab position is cleared.
l
The horizontal tab position is set to every eight characters.
l
The VFU channel becomes channel 0.
l
The family of typestyle is set to the Selectype Default Settings.
l
All special printing effects are cancelled unless they are part of the
SelecType Default Settings.
l
Download characters are cleared (with software initialization, they are
only deselected).
l
Justification becomes left justification.
l
No additional character spacing is provided.
Initialization
and
Default Settings
E-1