Acrosser AR-B1690 - Manual (Page 15)

AR-B1690 User’s Guide
15
2.2.10 Serial Port (COM1, COM2, COM3 and COM4)
! AR-B1690 is equipped with four serial ports. COM1. COM2 is a standard RS-232 interface.
! COM3.COM4 use an adapter cable to interface with external equipment.
! COM3 can be configured as a RS-485 or RS-232 port.
! When we are configuring J16 or J4, COM3 can also be configured as an RS-232 or RS-485.
A. COM1. COM2
Only RS232
COM1
9
8
7
6
5
4
3
2
1
B. COM3
! USED RS232 & RS485
1
2
9
10
1.DCD
2.DSR
3.RX
4.RTS
5.TX
6.CTS
7.DTR
9.GND
8.RI
J16
9
6
3
7
4
1
J4
RS-485
J16
9
6
3
7
4
1
J4
RS-232
Factory Preset
C. COM 4
! Only RS232
1
2
9
10
1.DCD
2.DSR
3.RX
4.RTS
5.TX
6.CTS
7.DTR
9.GND
8.RI
2.2.11 RS-485 Terminator Select (J7)
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