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Last Revised: 2014-10-09 08:02:43.0

CompactRIO Integrated Systems with Real-Time Controller and Reconfigurable Chassis

NI cRIO-907x

  • Integrated CompactRIO systems with a reconfigurable FPGA chassis and embedded real-time controller
  • Lower-cost systems for high-volume OEM applications
  • Up to 2M gate reconfigurable FPGA
  • 4 or 8 slots for C Series I/O modules
  • Up to 400 MHz real-time processor
  • Up to two 10/100BASE-TX Ethernet ports with built-in FTP/HTTP servers and LabVIEW remote panel Web server
  • Up to 256 MB DRAM memory, 512 MB of nonvolatile storage
  • RS232 serial port and available USB port for peripheral devices


NI cRIO-907x integrated systems combine an industrial real-time controller and reconfigurable field-programmable gate array (FPGA) chassis for industrial machine control and monitoring applications. The NI cRIO-9074 integrated system features an industrial 400 MHz real-time processor and an eight-slot chassis with an embedded, reconfigurable 2M gate FPGA chip. The new NI cRIO-9076 integrated system contains a 400 MHz real-time processor, a four-slot chassis with an embedded, reconfigurable LX45 FPGA chip, and a high-speed USB port. Both systems feature built-in nonvolatile memory and a fault tolerant file system. The new four-slot NI cRIO-9075 and NI cRIO-9076 systems provide a cost-optimized solution for high volume deployments and OEM applications.

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Requirements and Compatibility

OS Information

  • VxWorks

Driver Information

  • NI-RIO

Software Compatibility

  • LabVIEW
  • LabVIEW FPGA Module
  • LabVIEW Professional Development System
  • LabVIEW Real-Time Module

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Comparison Tables

ProductModule SlotsProcessor Speed (MHz)FPGADRAM (MB)Internal Nonvolatile Storage (MB)10/100BASE-TX Ethernet PortRS232 Serial PortPower Supply Input RangeUSB Port
NI cRIO-90728266Spartan-3 1M64128yesyes19 to 30 VDCno
NI cRIO-90738266Spartan-3 2M64128yesyes19 to 30 VDCno
NI cRIO-90748400Spartan-3 2M128256yes (Dual)yes19 to 30 VDCno
NI cRIO-90754400Spartan-6 LX25128256yesyes9 to 30 VDCno
NI cRIO-90764400Spartan-6 LX45256512yesyes9 to 30 VDCyes

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Application and Technology

System Configuration

These NI CompactRIO real-time controllers combine a four- or eight-slot reconfigurable chassis into an integrated system. The user-defined FPGA circuitry in the chassis controls each I/O module and passes data to the controller through a local PCI bus using built-in communication functions.


FPGA Resource Comparison


These systems also accept up to eight NI C Series I/O modules. A variety of I/O modules are available including voltage, current, thermocouple, RTD, accelerometer, and strain gage inputs; up to ±60 V simultaneous sampling analog I/O; 12, 24, and 48 V industrial digital I/O; 5 V/TTL digital I/O; counter/timers; pulse generation; and high voltage/current relays.

The 10/100 Mbits/s Ethernet port allows for programmatic communication over the network and the cRIO-9074 features dual Ethernet ports, which allows for the use of one port for network communication to a host PC or enterprise system and the other port for expansion I/O (easily connect another CompactRIO system or another Ethernet-based device for additional I/O).  The new cRIO-9076 also features a USB 2.0 port for data storage and connection to peripheral devices.

NI CompactRIOs have the ability to by synchronized with an SNTP time server on a network and the cRIO-9072, cRIO-9073, and cRIO-9074 also feature a built-in backup battery to maintain operation for the Real-Time Clock when external power is removed.  The cRIO-9075 and cRIO-9076 do not contain a backup battery for the Real-Time Clock.

Embedded Software

You can synchronize embedded code execution to an FPGA-generated interrupt request (IRQ) or an internal millisecond real-time clock source. The LabVIEW Real-Time ETS OS provides reliability and simplifies the development of complete embedded applications that include time-critical control and acquisition loops in addition to lower-priority loops for postprocessing, data logging, and Ethernet/serial communication. Built-in elemental I/O functions such as the FPGA Read/Write function provide a communication interface to the highly optimized reconfigurable FPGA circuitry. Data values are read from the FPGA in integer format and are then converted to scaled engineering units in the controller.


CompactRIO Software Architecture


Built-In Servers

In addition to programmatic communication via TCP/IP, UDP, Modbus/TCP, IrDA, and serial protocols, the CompactRIO controllers include built-in servers for Virtual Instrument Software Architecture (VISA), HTTP, and FTP. The VISA server provides remote download and communication access to the reconfigurable I/O (RIO) FPGA over Ethernet. The HTTP server provides a Web browser user interface to HTML pages, files, and the user interface of embedded LabVIEW applications through a Web browser plug-in. The FTP server provides access to logged data or configuration files.

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Software Recommendations

LabVIEW Professional Development System for Windows

  • Advanced software tools for large project development
  • Automatic code generation using DAQ Assistant and Instrument I/O Assistant
  • Tight integration with a wide range of hardware
  • Advanced measurement analysis and digital signal processing
  • Open connectivity with DLLs, ActiveX, and .NET objects
  • Capability to build DLLs, executables, and MSI installers


  • Design FPGA applications for NI reconfigurable I/O (RIO) hardware targets
  • Program with the same graphical environment used for desktop and real-time applications
  • Execute control algorithms with loop rates up to 300 MHz
  • Implement custom timing and triggering logic, digital protocols, and DSP algorithms
  • Incorporate existing HDL code and third-party IP including Xilinx CORE Generator functions
  • Included in the LabVIEW Embedded Control and Monitoring Suite

NI LabVIEW Real-Time Module

  • Design deterministic real-time applications with LabVIEW graphical programming
  • Download to dedicated NI or third-party hardware for reliable execution and a wide selection of I/O
  • Take advantage of built-in PID control, signal processing, and analysis functions
  • Automatically take advantage of multicore CPUs or set processor affinity manually
  • Includes real-time OS, development and debugging support, and board support
  • Purchase individually or as part of a LabVIEW suite

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Support and Services

System Assurance Programs

NI system assurance programs are designed to make it even easier for you to own an NI system. These programs include configuration and deployment services for your NI PXI, CompactRIO, or Compact FieldPoint system. The NI Basic System Assurance Program provides a simple integration test and ensures that your system is delivered completely assembled in one box. When you configure your system with the NI Standard System Assurance Program, you can select from available NI system driver sets and application development environments to create customized, reorderable software configurations. Your system arrives fully assembled and tested in one box with your software preinstalled. When you order your system with the standard program, you also receive system-specific documentation including a bill of materials, an integration test report, a recommended maintenance plan, and frequently asked question documents. Finally, the standard program reduces the total cost of owning an NI system by providing three years of warranty coverage and calibration service. Use the online product advisors at to find a system assurance program to meet your needs.


NI measurement hardware is calibrated to ensure measurement accuracy and verify that the device meets its published specifications. To ensure the ongoing accuracy of your measurement hardware, NI offers basic or detailed recalibration service that provides ongoing ISO 9001 audit compliance and confidence in your measurements. To learn more about NI calibration services or to locate a qualified service center near you, contact your local sales office or visit

Technical Support

Get answers to your technical questions using the following National Instruments resources.

  • Support - Visit to access the NI KnowledgeBase, example programs, and tutorials or to contact our applications engineers who are located in NI sales offices around the world and speak the local language.
  • Discussion Forums - Visit for a diverse set of discussion boards on topics you care about.
  • Online Community - Visit to find, contribute, or collaborate on customer-contributed technical content with users like you.


While you may never need your hardware repaired, NI understands that unexpected events may lead to necessary repairs. NI offers repair services performed by highly trained technicians who quickly return your device with the guarantee that it will perform to factory specifications. For more information, visit

Training and Certifications

The NI training and certification program delivers the fastest, most certain route to increased proficiency and productivity using NI software and hardware. Training builds the skills to more efficiently develop robust, maintainable applications, while certification validates your knowledge and ability.

  • Classroom training in cities worldwide - the most comprehensive hands-on training taught by engineers.
  • On-site training at your facility - an excellent option to train multiple employees at the same time.
  • Online instructor-led training - lower-cost, remote training if classroom or on-site courses are not possible.
  • Course kits - lowest-cost, self-paced training that you can use as reference guides.
  • Training memberships and training credits - to buy now and schedule training later.
Visit for more information.

Extended Warranty

NI offers options for extending the standard product warranty to meet the life-cycle requirements of your project. In addition, because NI understands that your requirements may change, the extended warranty is flexible in length and easily renewed. For more information, visit


NI offers design-in consulting and product integration assistance if you need NI products for OEM applications. For information about special pricing and services for OEM customers, visit


Our Professional Services Team is comprised of NI applications engineers, NI Consulting Services, and a worldwide National Instruments Alliance Partner program of more than 700 independent consultants and integrators. Services range from start-up assistance to turnkey system integration. Visit

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Detailed Specifications

The following specifications are typical for the – 20 to 55 °C operating temperature range unless otherwise noted.

Network interface

  10BaseT and 100BaseTX Ethernet


  IEEE 802.3

Communication rates

  10 Mbps, 100 Mbps, auto-negotiated

Maximum cabling distance

  100 m/segment
RS-232 Serial Port

Maximum baud rate

  115,200 bps

Data bits

  5, 6, 7, 8

Stop bits

  1, 2


  Odd, Even, Mark, Space

Flow control

Input Characteristics

Minimum input voltage

  0 V

Minimum low-level input voltage

  0.94 V

Maximum high-level input voltage

  2.43 V

Maximum input voltage

  5.5 V

Typical input capacitance

  2.5 pF

Typical resistive strapping

  1 kΩ to 3.3 V



  256 MB minimum

System memory

  128 MB



  512 MB minimum

System memory

  256 MB
Reconfigurable FPGA


FPGA type

  Spartan-6 LX25

Number of logic cells


Available embedded RAM

  936 kbits

Number of DMA channels



FPGA type

  Spartan-6 LX45

Number of logic cells


Available embedded RAM

  2,088 kbits

Number of DMA channels


For information about the life span of the nonvolatile memory and about best practices for using nonvolatile memory, go to and enter the Info Code SSDBP.

Power Requirements

Caution You must use a UL Listed ITE power supply marked LPS with the cRIO-9075/9076.

Recommended power supply

  24 W, 24 VDC

Power consumption

  15 W maximum

Power supply input range

  9 to 30 V
Physical Characteristics
If you need to clean the controller, wipe it with a dry towel.

Screw-terminal wiring

  0.5 to 2.5 mm2 (24 to 12 AWG)
copper conductor wire with
10 mm (0.39 in.) of insulation
stripped from the end

Torque for screw terminals

  0.5 to 0.6 N · m (4.4 to 5.3 lb · in.)


  643 g (22.7 oz)
Safety Voltages
Connect only voltages that are within these limits.

V terminal to C terminal

  30 V max, Measurement Category I

Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage. MAINS is a hazardous live electrical supply system that powers equipment. This category is for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics.

Caution Do not connect the system to signals or use for measurements within Measurement Categories II, III, or IV.

Safety Standards
This product is designed to meet the requirements of the following standards of safety for electrical equipment for measurement, control, and laboratory use:
  • IEC 61010-1, EN 61010-1
  • UL 61010-1, CSA 61010-1

Note For UL and other safety certifications, refer to the product label or the Online Product Certification section.

Electromagnetic Compatibility
This product meets the requirements of the following EMC standards for electrical equipment for measurement, control, and laboratory use:
  • EN 61326 (IEC 61326): Class A emissions; Industrial Immunity
  • EN 55011 (CISPR 11): Group 1, Class A emissions
  • AS/NZS CISPR 11: Group 1, Class A emissions
  • FCC 47 CFR Part 15B: Class A emissions
  • ICES-001: Class A emissions

Note For the standards applied to assess the EMC of this product, refer to the Online Product Certification section.

Note For EMC compliance, operate this product according to the documentation.

CE Compliance
This product meets the essential requirements of applicable European Directives, as amended for CE marking, as follows:
  • 2006/95/EC; Low-Voltage Directive (safety)
  • 2004/108/EC; Electromagnetic Compatibility Directive (EMC)
Online Product Certification
Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and the DoC for this product, visit, search by module number or product line, and click the appropriate link in the Certification column.
Environmental Management

National Instruments is committed to designing and manufacturing products in an environmentally responsible manner. NI recognizes that eliminating certain hazardous substances from our products is beneficial not only to the environment but also to NI customers.

For additional environmental information, refer to the NI and the Environment Web page at This page contains the environmental regulations and directives with which NI complies, as well as other environmental information not included in this document.

Waste Electrical and Electronic Equipment (WEEE)

EU Customers At the end of the product life cycle, all products must be sent to a WEEE recycling center. For more information about WEEE recycling centers, National Instruments WEEE initiatives, and compliance with WEEE Directive 2002/96/EC on Waste Electrical and Electronic Equipment, visit



Hazardous Locations

U.S. (UL)

  Class I, Division 2, Groups A, B, C, D, T4; Class I, Zone 2, AEx nL IIC T4

Canada (C-UL)

  Class I, Division 2, Groups A, B, C, D, T4; Class I, Zone 2, Ex nL IIC T4

Europe (DEMKO)

  Ex nA nL IIC T4

Operating temperature (IEC 60068-2-1, IEC 60068-2-2)

  – 20 to 55 °C

Note To meet this operating temperature range, follow the guidelines in the installation instructions for your CompactRIO system.

Storage temperature (IEC 60068-2-1, IEC 60068-2-2)

  – 40 to 85 °C

Ingress protection

  IP 40

Operating humidity (IEC 60068-2-56)

  10 to 90% RH, noncondensing

Storage humidity (IEC 60068-2-56)

  5 to 95% RH, noncondensing

Maximum altitude

  2,000 m

Pollution Degree (IEC 60664)


Indoor use only.

Shock and Vibration
To meet these specifications, you must panel mount the CompactRIO system and affix ferrules to the ends of the power terminal wires.

Operating shock (IEC 60068-2-27)

  30 g, 11 ms half sine 50 g, 3 ms half sine, 18 shocks at 6 orientations

Operating vibration, random (IEC 60068-2-64)

  5 grms, 10 to 500 Hz

Operating vibration, sinusoidal (IEC 60068-2-6)

  5 g, 10 to 500 Hz
The following table shows the standard Ethernet cable wiring connections for both normal and crossover cables.

Figure 1. Ethernet Connector Pinout

Ethernet Cable Wiring Connections
Pin Connector 1 Connector 2 (Normal) Connector 2 (Crossover)
1 white/orange white/orange white/green
2 orange orange green
3 white/green white/green white/orange
4 blue blue blue
5 white/blue white/blue white/blue
6 green green orange
7 white/brown white/brown white/brown
8 brown brown brown


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