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600 POS
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Appendix
A:
Pin Definition of RS232 DB9 Male
RS232-A for POS/Cash Register (Half-duplex)
Pin
Definition
1-
2R
X
3-
4-
5
GND
6
-
7-
8-
9
-
RS232-B for DVR (Full-duplex)
Pin
Definition
1
-
2R
X
3
TX
4
-
5
GND
6
-
7
R
TS
8
CTS
9
-
1
...
...
17
18
19
20
21
...
22