Com2 Output Type Setting (Jp9) - Advantech POC-155 User Manual

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.
Table B.2: COM2 Port Configuration (JP9)
Pin No. Open/Closed
Pin5,6 Closed
Pin7.9
Pin8,10
Pin13,15
Pin14,16
Pin3,4 Closed
Pin9,11
Pin10,12
Pin15,17
Pin16,18
Pin1,2 Closed
Pin9,11
Pn10,12
Pin15,17
Pin16,18
Figure B.4: COM2 port configuration
Function Description
COM2 is RS-232 port
(Default)
COM2 is RS-422 port
COM2 is RS-485 port
65 Appendix B