Kontron PCI-761 - Manual (Page 24)

9. Jumpers and Connectors PCI 761 – User’s Guide (V1.01)
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9.4.5. COM Port RS-232 Pin Assignment (CN3, CN6)
The serial interface for the board consists of CN3 port (COM2) support for RS-232, and CN6 (COM1) for
RS-232/RS-422/RS-485.
Pin Signal Pin Signal
1 Data Carrier Detect (DCD) 2 Data Set Ready (DSR)
3 Receive Data (RXD) 4 Request to Send (RTS)
5 Transmit Data (TXD) 6 Clear to Send (CTS)
7
Data Terminal Ready
(DTR)
8
Ring Indicator (RI)
9 Ground (GND) 10 Disconnect(NI)
2
4
6
1
3
5
7
8
9 10
9.4.6. COM2 RS-422/485 Pin Assignment
COM1 Serial Port 10-pin (Box-header) Connector Pin Assignment list
Signal Name
Pin #
RS-422 RS-485
1 TX- DATA-
2 No connector No connector
3 TX+ DATA+
4 No connector No connector
5 RX+ No connector
6 No connector No connector
7 RX- No connector
8 No connector No connector
9 GND GND
10 NI NI