User Manual

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NOTE
For the NPort with DB Male serial ports, you may refer to the
DB9 Male Ports pin assignment section to loop back pin 2 and
pin 3 for the
RS-232 interface to carry out a self test on the
device.
Pin Assignments and Cable Wiring
DB9 Male Port Pinouts
Pin assignments apply to NPort 5410 (RS-232 only), 5450, and 5450I.
DB9 Male
Pin RS-232
RS-422/
4-wire RS-485
2-wire RS-
485
1
DCD
TxD-(A)
–
2
RxD
TxD+(B)
–
3
TxD
RxD+(B)
Data+(B)
4
DTR
RxD-(A)
Data-(A)
5
GND
GND
GND
6
DSR
–
–
7
RTS
–
–
8
CTS
–
–
9
–
–
–
DB9 Wiring-NPort 5410/5450/5450I
DB9 Female to DB9 Male