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APPENDIX
1
2
3
4
6
1
2
3
4
5
6
7
8
20
F-GND
TXD
RXD
RTS
DSR
20
7
S-GND
DTR
Printer side
(D-sub 25 pin)
IBM PC side
3
2
7
8
6
5
1
4
F-GND
TXD
RXD
RTS
CTS
DSR
S-GND
DCD
DTR
9 pin25 pin
13
25
1
14
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 - 25 N.C. Not connected
B-2. Interface Connections
Refer to the interface specifications of the host for details on connecting to its
interface connector. The following illustration shows a typical connection
configuration.
Pin No.
Signal Name
Direction Function