– 47 –
Pin No.
Signal Name
Direction
Function
20
DTR
OUT
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
21 - 24
N.C.
Not connected
25
INIT
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.
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.
Printer side
PC side
1
2
3
4
6
1
2
3
4
5
6
7
8
2 0
F -G N D
T X D
R X D
R T S
D S R
2 0
7
S -G N D
D T R
(D-sub 25 pin)
3
2
7
8
6
5
1
4
F -G N D
T X D
R X D
R T S
C T S
D S R
S -G N D
D C D
D T R
9 p in
2 5 p in
13
25
1
14
