NI USB-485 1-Port RS485/422 Interface for USB

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  • Compatible with any application that uses COM ports on Windows 7/Vista/XP PCs
  • Standard baud rates up to 460.8 kbit/s, 128 B transmit-and-receive FIFOs
  • Fully functional RS485/422 port, including RTS/CTS hardware handshake lines
  • Automatic 2-wire transceiver-control mode, software-selectable biasing
  • Bus-powered with integrated USB cable, requires no external power; D-SUB 9-pin male connector
  • Easy programming in NI LabVIEW, NI LabWindows™/CVI, and ANSI C/C++ with NI-VISA API
  • Data Sheet
NI USB-485 interfaces transform your universal serial bus (USB) port into an asynchronous serial port for communication with RS485 and RS422 serial devices. The USB-485 uses the NI-Serial driver to work as a standard serial port in any Windows application. NI-Serial also includes the NI-VISA API for accessing advanced serial port features and writing interface-independent code that is compatible with any interface that supports the Virtual Instrument Software Architecture (VISA).

The mark LabWindows is used under a license from Microsoft Corporation. Windows is a registered trademark of Microsoft Corporation in the United States and other countries.

Data Sheet | View Pricing and Purchasing Information

Specifications Documents

  • Data Sheet

Specifications Summary

General
Product Name USB-485
Product Family Serial
Form Factor USB
Part Number 778475-01
Operating System/Target Windows
LabVIEW RT Support No
Voltage 5 VDC
Current 175 mA
Source Internally Powered
Serial Standard Compatibility RS-422
Port Information
Number of Ports 1
Max Cable Length 1.2 km
I/O FIFO Buffer Size 128 B
Max Device Connections / Port 31
Handles RTS/CTS Handshake Lines Yes
Direct Memory Access (DMA) No
Physical Specifications
Length 3.81 cm
Width 3.56 cm
Height 1.52 cm
I/O Connector 9-pin D-Sub (DB-9)
Minimum Operating Temperature 0 °C
Maximum Operating Temperature 70 °C

NI USB-485 Complete Package

Each NI USB-485 requires:

NI USB-485

NI USB-485 and Accessories

NI USB-485 - 778475-01 Qty $ 156 each
Optional Accessories
RS485/RS422 Null Modem Cable (1m) - 183283-01
Select length:
Qty $ 28 each
Hardware Subtotal: $ 156

Package Price: $ 156

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Additional Product Information

  • Data Sheet