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Parallel Interface
5/22/2012 GC420t™ User Guide P1052686-001
Parallel Interface
The printer’s parallel interface uses the IEEE 1284-A to 1284-B parallel interface cables. the
host connector has a DB-25 pin male connector. The printer connector is a Centronics style
connector.
PRINTER
DB-25
Pin No.
Centronics
Pin No.
DB-25 to Centronics
(Cable)
HOST
STROBE~
DATA 0
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
ACK~
BUSY
PAPER ERR.
SELECT
AUTOFD~
ERROR~
N/A
N/A
N/A
SIG. GND
SIG. GND
SIG. GND
SIG. GND
SIG. GND
SIG. GND
SIG. GND
STROBE~
DATA 0
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
ACK~
BUSY
PAPER ERR.
SELECT
AUTOFD~
n/c
SIG. GND
CHAS GND
+5V
SIG. GND
SIG. GND
SIG. GND
SIG. GND
SIG. GND
SIG. GND
SIG. GND
n/c
ERROR~
SIG. GND
SIG. GND
SIG. GND
SIG. GND
SIG. GND
SIG. GND
n/c
n/c
SELECTIN~
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
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