Interface timing

The figure below shows the timing for the parallel interface.

BUSYrl

ACKNLG

Initialization

There are three ways that the printer can be initialized (returned to a fixed set of conditions).

Hardware initialization

Software initialization

l

l

l

When the power is turned on.

When the printer receives an INIT signal at the parallel interface (pin 31 goes LOW).

Software sends the ESC @ (initialize the printer) command.

A-8

Technical Specifications