8.2.1.2
Signal Description
PIN Corresponding
GND
Signal Signal-
I/O
Meaning
1 19
STROBE
I
This pulse 0.5
µ
s) reports that
data bits are valid
2-9
20-27
DATA 1-8
I
Data bits D0-D7
10
28
ACKNOWLEDGE O
Printer reports: Data has been
processed (is ready to receive)
11
29
BUSY
O
Printer reports: Data received,
data being processed
12 30
PE
(Paper
empty)
O
Printer reports to the com-
puter: No paper available
13 --
SELECT
(Online)
O
Signal is high, when the printer
is online
14
--
Autofeed
I
No function, only for bi-
directional interface
15 --
Free
Free
16 --
GND
GND
17 --
Chassis-GND
Chassis
GND
18,
35
--
+ 5V
+ 5V above 0.2A Si
19-
30
-- GND
GND
31 --
INIT
I
Resets
printer
32
--
ERROR
O
Signal is low, when there is an
error in the printer
33 --
GND
GND
34 --
Free
Free
36
--
SELECT IN
I
No function, only for bi-
directional interface
70