Epson Stylus Pro 7000 - Page 25

EPSON Stylus Pro 7000 Revision B
Product Description Interfaces 25
Note: In (I) and Out (O) refer to the direction of signal flow from the printer’s point
of view.
Table 1-16. Connector Pin Assignments and signals - Forward
Channel
Pin
No.
Signal
Name
Return
Pin
In/
Out
Functional Description
1
-STROBE
19 I
Data reception pulse. Data is read at the falling
edge of this pules.
2-9
DATA0~7
20-27 I
The DATA0 through DATA7 signals represent
data bits 0 to7, respectively. Each signal is at
high level when data is logical 1 and low level
when data is logical 0.
10
-ACKNLG
28 O
This signal is a negative pulse indicating that
the printer can again accept data.
11
BUSY
29 O
HIGH means the printer cannot receive data.
This occurs when the printer is receiving data
or when the printer is in an error state.
12
PE
28 O
HIGH means no paper is loaded.
13
SLCT
28 O
Always HIGH when the printer is on.
14
-AFXT
30 I
Not used
15
NC
- -
Not connected
16
GND Ground for twisted pair return
17
Chassis
GND
Ground for frame/body
18
Logic H Pulled up to +5V via 3.9Kohm
19-30
GND Ground for twisted pair return
31
-INIT
30 I
Pulse width of 50uS or more means LOW
pulse, and the falling edge of LOW signal
causes the printer to initialize.
32
-ERROR
29 O
LOW means printer error
33
GND
---- ----
Ground for twisted pair return
34
NC
---- ----
Not connected
35
+5V
---- O
HIGH during normal operation. Pulled up to
+5V via 1.0Kohm
36
-SLIN
30 I
Not used
Table 1-16. Connector Pin Assignments and signals - Forward
Channel (continued)
Pin
No.
Signal
Name
Return
Pin
In/
Out
Functional Description