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Signal
Return
Signal
Direction Description
Pin
Pin
32
-
ERROR
OUT
This level becomes LOW when
the printer is:
1) In a paper-out state
2) When the PAUSE button is
pressed
3) In an error state
33 -
GND
-
Same as for pins 19-30
34 -
NC
Not used
35
-
OUT
Pulled up to 5 V through 3.3
resistance
36
-
SLCT IN
IN
The DC1 /DC3 code is valid only
when this signal is HIGH This
signal is
always LOW.
Note:
The column heading “Direction” refers to the direction of signal
flow as viewed from the printer.
“Return” denotes the twisfed-pair return, to be 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 TTL level. Both the rise
and fall times of each signal must be less than 0.2 microseconds.
Data transfer must be carried out by observing the ACKNLG or
BUSY signal. (Data transfer to this printer can be carried out
only after receipt of the ACKNLG signal or when the BUSY
signal is LOW.)
Technical Specifications
7-13