AR-B1652 User’s Guide
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2.2.11 Serial Port (COM1, COM2, COM3, COM4)
AR-B1652 is equipped with four serial ports. COM1 is a standard RS-232 interface.
COM2/3/4 use an adapter cable to interface with external equipment.
When we are configuring J3 and J5, COM1 can also be configured as an RS-232, RS-485 or RS-422 port.
A. COM1
USED RS232 & RS485 & RS422
COM1
9
8
7
6
5
4
3
2
1
J3 J5
B. COM2/3/4
USED RS232
2.2.12 Clear CMOS (JBAT1)