Table 1-11. Connector Pin Assignments and Signal Functions (Cont.)
Pin No. Signal Name
Return
Pin No.
Dir.
Functional Description
14
AUTO FEED-XT
—
IN
If LOW when the printer is initialized, the printer
automatically performs a line feed upon input of
the CR code (auto LF).
15
Not used.
16
GND
—
Ground for twisted pair grounding.
17
Chassis
GND
— —
Chassis ground level of printer.
18
Not used.
19
to 30
GND
Ground for twisted pair grounding.
31
I NIT
16
IN
Pulse input for printer initialization (width: 50
KS,
minimum, active
LOW).
32
ERROR
OUT
LOW indicates an error has occurred in the printer.
33
GND
—
—
Ground for twisted pair grounding.
34
Not used.
35
OUT
Always HIGH. (Pulled up to + 5 V through 3.3 K-ohm
resistor.)
36
SLCT-IN
—
IN
If LOW when the printer is initialized, DC
l/DC3
control is disabled.
NOTES: 1. “Dir.” indicates the direction of the signal flow as viewed from the printer.
2. “Return Pin No.” denotes a twisted pair return line.
3. The cable used must be shielded to prevent noise.
4. All interface conditions are based on TTL levels. Both the rise and fall times of all
signals
must be less than 0.2
ws.
5. The
/AUTOFEED-XT
signal can be set to LOW using DIP switch 2-4.
6. The
/SELECT-lN
signal can be set to LOW using jumper 3.
7. You can perform printing tests, including interface circuit tests, without using external
equipment by setting the DATA 1 through DATA 8 pins to the
\STROBE
signal.
1-15
To Next Page
Loading...
