Epson Stylus 1000, Руководство пользователя

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Signal Return
Pin Pin
-
Signal Direction Description
NC Not used
- Twisted-pair return signal ground
level
-
IN When this level becomes LOW,
the printer controller is reset to
its state when the power is first
turned on and the print buffer is
cleared. This level is normally
HIGH; its pulse width must be
more than at the receiving
terminal.
- ERROR OUT This level becomes LOW when:
The paper-is out
The PAUSE button is
pressed
An error occurs
- - Same
as
for pins
NC Not used
- Pulled up to 5 V through 1
resistance
Note:
NC Not used
The column heading “Direction” refers to the direction of signal flow as
viewed from the printer.
“Return” denotes the twisted-pair return, connected at signal ground level.
For the interface wiring, be sure to use a twisted-pair cable for each
signal and to complete the connection on the return side.
All interface conditions
are based
on the level. Both the rise and fall
times of
each
signal must be less than microseconds.
Data
transfer must be carried out by observing the or BUSY
signal. Data transfer to this printer can be carried out only after receipt of
the
signal or when the BUSY signal is LOW.
Appendix A-9