NI 9871 4-Port, RS485/RS422 Serial Interface Module for CompactRIO

Starting at $ 655 (view pricing options)
  • 4 RS485/RS422 (TIA/EIA-485/422) ports for CompactRIO
  • Baud rates from 14 baud to 3.684 Mbaud; -40 to 70 °C operating range
  • Data bits: 5, 6, 7, 8; Stop bits: 1, 1.5, 2; Flow control: XON/OFF, RTS/CTS, None
  • Individual 64 B UART FIFO buffers per port
  • Transceiver modes: 4-wire, 2-wire DTR controlled, 2-wire DTR controlled with echo, 2-wire auto
  • 8 to 28 VDC externally powered; PC-MF4-PT cable included
  • Configure Complete CompactRIO System
  • View Support Resources
The NI 9871 C Series serial module adds four RS485/RS422 serial ports to NI CompactRIO systems. It interfaces directly with the CompactRIO FPGA to offer you flexibility in communicating with serial devices. The module has individual 64 B buffers on every port that save CompactRIO FPGA space and simplify programming.

This C Series module supports standard start bit, stop bit, and handshaking settings, and has baud rates up to 3.684 Mbaud per port. You can pass up to 1.28 Mbit/s of data between the module and CompactRIO.

The NI 9871 uses an external power supply to provide maximum compatibility and reliability under all serial port conditions. A 35 cm female microfit to pigtail power cable is included for quick connection to the CompactRIO external power supply. The optional PC-MF4-Y C Series microfit male to 2 female Y adapter cable is available for daisy chaining multiple NI 987x module power supplies.

NI 987x C Series modules are available in a bundle with four 10P10C modular jack to DB9 (DE9) male cables for out-of-the-box connectivity.

Specifications Documents

  • View Data Sheet

Specifications Summary

Loading....

To use the NI 9871 , you need all items in the diagram below. Select Option 1 if you already own a CompactRIO System, or Option 2 if you do not already own a chassis, controller, or software.

Roll over the icons below to learn why you need each item in the system

CompactRIO System

NI 9871

Controller

Software

NI 9871
- 779892-02 Qty $ 655 each
- 779892-03 Qty $ 819 each
- 779892-01 Qty $ 742 each
Optional Accessories
Cable
Qty $ 21 each
Qty $ 9 each
Qty $ 26 each
Qty $ 26 each
Qty $ 31 each
Qty $ 37 each
10P10C-DE9M-JS Serial Cable, 10-pos plug to DE9-M Jackscrews (2m) - 199022-02
Qty $ 26 each
RS485/RS422 Null Modem Cable (1m) - 183283-01
Select length:
Qty $ 28 each

Subtotal: $ 655

Add to Cart
Guarantee your price for 30 days (learn more) Request Quote

Get Started with CompactRIO

Choose from over one hundred specialized instruments to create a CompactRIO System that suits your measurement needs and can scale for future applications. Then, well help you choose the right hardware and software to complete your configuration.

Add More Measurements and I/O Modules

Use the CompactRIO Advisor to choose from a variety of modules including analog I/O, digital I/O, serial and more. Then, complete and price the CompactRIO System.

Add Modules

Preview a Complete System

View and price a complete CompactRIO configuration including the CompactRIO System, chassis, and controller. Starting from the default configuration, you can add modules, accessories, and software and customize your system.

View and Price a Configured System

Service Programs for Hardware

At NI, we produce high-performance hardware and are committed to helping you maintain that performance for years to come. Our three- or five-year service programs for hardware and systems provide the coverage you need while ensuring lowest total cost of ownership over the life of your system:

  • Get up and running faster with system assembly and configuration services
  • Operate on a fixed budget with prepaid repair and calibration services
  • Maintain peak performance with a discounted calibration plan
  • Simply call us to schedule your service—no budget approval needed

To learn more about service programs for hardware and systems, see ni.com/services/hardware

Technical Support

With the knowledge, experience, and responsiveness of NI applications engineers in more than 30 languages and 40 countries, we have the technical support resources to ensure your success. Through our standard NI technical support program, we can help you:

  • Consult on how to use NI products
  • Overcome development challenges
  • Quickly resolve issues pre- or post-deployment

To access NI technical support services for your hardware, visit ni.com/support

Training and Certification

With extensive training options for new and experienced users, we can help you reduce development time and costs through faster learning and increased productivity with your NI hardware and systems. Gain the skills you need to design and develop high-quality applications:

  • Learn recommended techniques to reduce development time and improve application performance and scalability
  • Leverage more than 40 training courses taught by NI and industry experts
  • Attend training in a variety of formats, including online, virtual, and classroom settings

To find training courses for your hardware, visit ni.com/training

Consulting and Integration

NI and the extensive network of NI Alliance Partners provide a wide range of professional services so that together, we can assist you with the design, development, and deployment of even the most complex systems. Take advantage of the team’s in-depth knowledge of NI products and applications with the following services:

  • Prototyping and feasibility analysis
  • Startup, consulting, and development assistance
  • System integration
  • Migration and upgrade assistance

For more information on NI professional services and the Alliance Partner Network, see ni.com/services/consulting/