3-10 AR-B9612 User’s Guide
(3) RS-232C Connector (J6 & J7)
J6 is used to connect the COM A port RS-232 selected, the I/O
port default address is 3F8H.
J7 is used to connect the COM B port RS-232 selected, the I/O
port default address is 2F8H.
1 -DCD
2 -DSR
3 RXD
4 -RTS
5 TXD
6 -CTS
7 -DTR
8 -RI
9 GND
10 N.C.
1
2 10
9
COM-A/B
RS-232
1
9
5
6
Figure 3-9 J6 & J7 : COM A & COM B RS-232
3.2.6 Reset Connector (J9)
J9 is used to connect to an external reset switch. Shorting
these two pins will reset the system.
1 2 1 2
ResetDefault setting
Figure 3-10 J9 : Reset Connector
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