National Instruments ENET-232 Series, User Manual

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Appendix D Serial Port Information
© National Instruments Corporation D-7 ENET-232 and ENET-485 Series User Manual
Cable Connections
This section describes the cable connectors on your serial device server.
DB-9 Connector
Figure D-6 and Table D-2 give the pin locations and descriptions of the
DB-9 connector.
Figure D-6. DB-9 Connector Pin Locations
Table D-2. DB-9 Pin Descriptions
DB-9 Pin 232 Signal 485 Signal
1 DCD GND
2 RXD CTS+ (HSI+)
3 TXD RTS+ (HSO+)
4 DTR RXD+
5 GND RXD–
6 DSR CTS– (HSI–)
7 RTS RTS– (HSO–)
8 CTS TXD+
9 RI TXD–
PIN 1
PIN 9
PIN 5
PIN 6