Acrosser AR-B1651 - Manual (Page 12)

AR-B1651 User’s Guide
2.2.11 Serial Port (COM1, COM2)
AR-B1651 is equipped with two serial ports. COM1 is a standard RS-232 interface.
COM2 use an adapter cable to interface with external equipment.
When we are configuring P1or P2, COM1 can also be configured as an RS-232 or RS-485 port.
A. COM1
USED RS232 & RS485
COM1
9
8
7
6
5
4
3
2
1
P1
9
6
3
7
4
1
P2
RS-232
P1
9
6
3
7
4
1
P2
RS-485
Factory Preset
B. COM2
USED RS232
1
2
9
10
1.DCD
2.DSR
3.RX
4.RTS
5.TX
6.CTS
7.DTR
9.GND
8.RI
2.2.12 RS-485 Terminator Select (JP1)
When there is only one line, the setting should be left off. If multiple blocks are used on a single line, it should be
set to “ ON” in order to properly terminate the connection for better transmission of data.
OFF
Factory Preset
1
2 1
2
ON
2.2.13 RS-485 Header (JP3)
12