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NI-9870
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NI (National Instruments) · CompactRIO

NI-9870

The NI-9870 is an enclosed four-port RS232 C Series serial interface module for CompactRIO. It provides four serial channels with a maximum baud rate of 921.6 kbits/s.

ManufacturerNI (National Instruments)
ModelNI-9870
Part Number779891-01 · 779891-02
Product Type4-Port, RS232 C Series Serial Interface Module
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Supported Serial ProtocolsRS232
Supported Hardware PlatformCompactRIO
Maximum Baud Rate921.6 kbits/s
Operating Temperature Range-40 °C to 70 °C
Front Connection TypeRJ50
Isolation TypePort-to-earth ground
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Overview

Product overview

Key product information and technical features.

The NI-9870 adds four RS232 serial ports to a CompactRIO system. The ports are accessed directly from the FPGA for communication with serial devices.

Individual buffers on each port help save FPGA space and simplify programming. The module supports standard serial start bit, stop bit and handshaking settings and requires external power.

  • Four RS232 serial channels in an enclosed C Series module.
  • Maximum baud rate of 921.6 kbits/s.
  • RJ50 front connections with port-to-earth ground isolation.
  • Operating temperature range of -40 °C to 70 °C.
  • Individual port buffers help reduce FPGA space requirements and simplify programming.
  • Supports standard serial start bit, stop bit and handshaking settings; uses external power.
Verified specifications

Technical data

Verified product specifications.

Supported Serial ProtocolsRS232
EnclosedYes
Supported Hardware PlatformCompactRIO
Maximum Baud Rate921.6 kbits/s
Operating Temperature Range-40 °C to 70 °C
Front Connection TypeRJ50
Isolation TypePort-to-earth ground
Number of Serial Channels4
NI part numbers779891-01, 779891-02, 779891-03
Condition & included items

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NI

Manufacturer

CompactRIO

Supported Hardware Platform

NI-9870

This product

Platform shown as listed by NI. Confirm controller, chassis and software fit for your system with NI before integration.
Manuals & software

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Letter Of Volatility (NI)Letter Of Volatility · ni.com
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Getting Started (NI)Getting Started · ni.com
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Specifications (NI)Specifications · ni.com
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Dimensional Drawings (NI)Dimensional Drawings · ni.com
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Product Page (NI)Product Page · ni.com
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Shipping, warranty & returns

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Warranty
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FAQ

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Product-specific answers based on available technical information.

What serial protocol and port count does the NI-9870 provide?

The NI-9870 provides four RS232 serial channels.

What is the maximum baud rate of the NI-9870?

The specified maximum baud rate is 921.6 kbits/s.

Which hardware platform is listed for the NI-9870?

The supported hardware platform is CompactRIO. Confirm the specific controller, chassis and software requirements before integration.

What connections and isolation does the NI-9870 use?

The module uses RJ50 front connections and provides port-to-earth ground isolation.

What part numbers are listed for the NI-9870?

The listed NI part numbers are 779891-01, 779891-02 and 779891-03. Confirm the required ordering variant before selection.

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