User manual

71 Appendix B
B.3.1 COM2 Output Type Setting (JP9)
COM2 can be configured to operate in RS-232, RS-422, or RS-485 mode.
This is done via JP9. JP9 is the 18 pins jumper close to the COM Port
Connector.
Figure B.4: COM2 port configuration
Table B.2: COM2 Port Configuration (JP9)
The IRQ and the address ranges for COM1, 2, and 3 are fixed.
Pin No. Open/
Closed
Function Description
Pin5,6
Pin7.9
Pin8,10
Pin13,15
Pin14,16
Closed COM2 is RS232 port (Default)
Pin3,4
Pin9,11
Pin10,12
Pin15,17
Pin16,18
Closed COM2 is RS422 port
Pin1,2
Pin9,11
Pn10,12
Pin15,17
Pin16,18
Closed COM2 is RS485 port