Table of Contents
Advertisement
Signal
Return
Pin
Pin
18
—
19-30
—
31
30
32
29
33
—
34
—
35
—
36
30
Note:
The column heading "Direction" refers to the direction of signal flow as
viewed from the printer.
"Return Pin" denotes the twisted-pair return pin 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 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 level of the BUSY signal is LOW.
Signal
Direction
Logic H
OUT
GND
—
INIT
IN
ERROR
OUT
GND
—
NC
—
+5 V
OUT
SLIN
IN
Description
Pulled up to +5 V through
3.9 K resistance
Twisted-pair return signal
ground level
When this signal goes 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 50 s at
the receiving terminal.
This signal level goes LOW
when the printer:
1) Is out of paper
2) Is in an error state
3) Has no ink cartridges
installed
Same as for Pins 19-30
Not connected
Pulled up to +5 V through
3.3 K resistance
Not used
Technical Specifications
A-11
Advertisement
Table of Contents
