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Serial Interfaces for RS232, RS485, and RS422

National Instruments offers high-quality, reliable serial interfaces for communications with laboratory instruments, industrial devices, and embedded circuits using RS232, RS485, and RS422. NI serial interfaces work on all major PC platforms with a variety of port and isolation options.

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8- and 16-port RS232 and RS485 serial interfaces for PCI Express systems

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Adding RS232 and RS485 serial ports to CompactRIO embedded control systems

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Low-cost, highly flexible 1-, 2-, and 4-port serial interfaces for USB

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Product Results (48 Devices/Modules)
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1
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NI USB-232
1-Port RS232 Interface for USB
$ 149
Ports: 1 · RS-232
Transfer Rate: 230.4 kbits/s
Devices/Port: 1
2
/Navigation/Faceted/InstrumentControlxx
NI USB-485
1-Port RS485/422 Interface for USB
$ 149
Ports: 1 · RS-422 · RS-485
Transfer Rate: 460.8 kbits/s
Devices/Port: 31
3
/Navigation/Faceted/InstrumentControlxx
Ports: 1 · RS-232
Transfer Rate: 921.6 kbits/s
Devices/Port: 1
4
/Navigation/Faceted/InstrumentControlxx
NI PCI-8430/2 (RS232)
High-Performance 2-Port Serial Interface for PCI
$ 308
Ports: 2 · RS-232
Transfer Rate: 1 Mbits/s
Devices/Port: 1
5
/Navigation/Faceted/InstrumentControlxx
Ports: 2 · RS-232
Transfer Rate: 921.6 kbits/s
Devices/Port: 1
6
/Navigation/Faceted/InstrumentControlxx
NI USB-232/2
2-Port RS232 Serial Interface for USB
$ 349
Ports: 2 · RS-232
Transfer Rate: 230.4 kbits/s
Devices/Port: 1
7
/Navigation/Faceted/InstrumentControlxx
NI PCI-8431/2 (RS485 and RS422)
High-Performance 2-Port Serial Interface for PCI
$ 359
Ports: 2 · RS-422 · RS-485
Transfer Rate: 3 Mbits/s
Devices/Port: 31
8
/Navigation/Faceted/InstrumentControlxx
NI USB-485/2
2-Port RS485/422 Serial Interface for USB
$ 399
Ports: 2 · RS-422 · RS-485
Transfer Rate: 460.8 kbits/s
Devices/Port: 31
9
/Navigation/Faceted/InstrumentControlxx
NI PCIe-8432/2 (Industrial RS232)
High-Performance, Isolated Serial Interface for PCI Express
$ 411
Ports: 2 · RS-232
Transfer Rate: 1 Mbits/s
Devices/Port: 1
10
/Navigation/Faceted/InstrumentControlxx
NI PCI-8432/2 (Industrial RS232)
High-Performance, Isolated 2-Port Serial Interface for PCI
$ 411
Ports: 2 · RS-232
Transfer Rate: 1 Mbits/s
Devices/Port: 1
1-10 of 48
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