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Pin No.
Signal Name
20
21 - 24
25
11-3. Interface Connections
Refer to the interface specifications of the host for details on connecting to its interface con-
nector. The following illustration shows a typical connection configuration.
Direction
DTR
OUT
N.C.
INIT
13
25
Printer side
(D-sub 25 pin)
F -G N D
1
T X D
2
R X D
3
R T S
4
D S R
6
7
S -G N D
D T R
2 0
X-On/X-Off Communication Mode
Always space, except during following conditions:
• Period between reset and communication enabled
• During self printing and dot alignment adjustment
Not connected
Dip switch 2-8 = OFF
Status of this signal is not checked.
Dip switch 2-8 = ON
This is an externally reset signal.
A space above 1 ms pulse width engages reset.
PC side
2 5 p in
9 p in
1
2
3
4
5
6
7
8
2 0
– 47 –
Function
1
14
F -G N D
3
T X D
2
R X D
7
R T S
8
C T S
D S R
6
5
S -G N D
1
D C D
4
D T R
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