Siemens 9015 Manual De Usuario
Centronics
Interfaces
Programmer Reference Guide
U26169-J-Z716-1-7600
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1
Parallel Centronics interface
Pin assignment
Pin
Signal
name
name
Explanation
Direction
from/to printer
from/to printer
1
STROBE
When the signal is set to logical zero, the
data byte DATA 1 - DATA 8 is stored in the
printer buffer.
data byte DATA 1 - DATA 8 is stored in the
printer buffer.
x
2
3
4
5
6
7
8
9
3
4
5
6
7
8
9
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
DATA 8
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
DATA 8
Data line LSB
Data line
Data line
Data line
Data line
Data line
Data line
Data line MSB
Data line
Data line
Data line
Data line
Data line
Data line
Data line MSB
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
10
ACKN
The printer indicates that it has received a
character or a control character and that it is
ready to receive another character by
setting this signal to zero.
character or a control character and that it is
ready to receive another character by
setting this signal to zero.
x
11
BUSY
The printer cannot accept further data when
this signal is 1.
this signal is 1.
x
12
PE
Is set to 1 under the following conditions:
–
No paper
–
Paper out
–
Paper jam
x
13
SELECT
This signal is always one. It indicates that
the printer is always online and ready.
the printer is always online and ready.
x
31
INIT
When this signal goes to zero, the
ACKN
signal of the printer is set to one.
x
32
FAULT
This signal is always one. It only goes to
zero when the printer is turned off.
zero when the printer is turned off.
x