Epson 1000 Initialization, Interface timing, A-10Appendix

Interface timing

The figure below shows the timing for the parallel interface.

B U S Y		d
	I		,;
ACKNLG

lop -l

D A T A x\ x;

STROBE

,+&F

Initialization

The printer can be initialized (returned to a fixed set of conditions) in three ways:

Hardware		Ll The power is turned on.
initialization		D The printer receives an INIT signal from the parallel
			interface (pin 31 goes LOW).
		The following condition then results:
	1)		The printer mechanism is initialized.
	2)		The input data buffer is cleared.
Software		3) The download character set is cleared.
		4) The print buffer is cleared.
	5)		The default values are set. (Panel settings are reset.)
		CI Software sends the ESC @ (initialize the printer)
initialization			command.
		The following condition then results:
	1)		The print buffer is cleared.
		2) The default values are set. Crhe last panel settings are
			kept.)
Control		D Hold down the RESET button.
panel		0 The printer switches to an interface using the Auto
initialization			interface	selection feature.
		The following		results:
	1)		The input data buffer is cleared.
	2)		The print buffer is cleared.
	3)		The default values are set. (The last panel settings are
			kept.)

A-10 Appendix