Acrosser AR-B1640 - Manual (Page 11)

AR-B1640 User’s Guide
11
3.4 SERIAL PORTS (COM1, COM2)
•
COM1 D-SUB 9-PIN
•
COM2 10-pin Connector
1
10 2
9
3.5 COM1 RS-232/RS-485 SELECT (XP1, XP2)
•
RS-485 Terminator Select (J2)
J2 (ON)
•
RS-485 Header (J1)
1
2
3
PIN Signal PIN Signal
1 /DCD1 2 RXD1
3 TXD1 4 /DTR1
5 GND 6 /DSR1
7 /RTS1 8 /CTS1
9 /RI1 10 GND
PIN Signal PIN Signal
1 /DCD2 2 /DSR2
3 RXD2 4 /RTS2
5 TXD2 6 /CTS2
7 /DTR2 8 /RI2
9 GND 10 NC
JUMPER FUNCTION
XP1
1
3
5
1
2
3
XP2
RS-232
FACTORY PRESET
XP1
1
3
5
1
2
3
XP2
RS-485
PIN Signal
1 N485+
2 N485-
3 GND
1 5
6 9
FACTORY PRESET
* When there is only one line the setting should be left off
(please take off the jumper), if multiple blocks are used on a
single line this should be set to “ON”(place a jumper) in order
to properly terminate the connection for better transmission