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Technical Specifications
Signal
Return
Pin
Pin
Signal
Direction
Description
16
-
OV
-
Logic ground level.
17
-
CHASSIS
Printer's chassis ground, which is isolated
GND
- from the logic ground.
18
-
NC
-
Unused.
19-30
-
GND
-
Twisted-pair return signal ground level.
31
INIT
-
IN
When level becomes LOW, the printer
controller is reset to its power-up state
and the print butter is cleared. This level
is usually HIGH; its pulse width must be
more than 50 µs at the receiving
terminal
32
-
ERROR
OUT
This level becomes LOW when the printer
is in:
1) Paper-end state
2) Off line state
3) Error state.
33
GND
Same as for Pins 19 - 30.
34 NC
35 - -
-
Unused.
-
Pulled up to +5 V through 3.3 K
resistance.
36 - SLCT IN IN The DC1/DC3 code is valid only when
this signal is HIGH. (Internal fixing can
be carried out with DIP switch pin 2-1.
The level of this signal is factory-set to
LOW.)
6-6
Technical Specifications