{"id":749,"count":0,"description":"
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NI CompactRIO Systems<\/h2>\r\n\r\n
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NI CompactRIO systems combine a real-time controller, user-programmable FPGA and modular C Series I\/O for embedded measurement, monitoring and control. They are used in industrial automation, machine control, energy systems, automotive validation, robotics, condition monitoring and test applications that require deterministic timing and reliable field integration.<\/p>\r\n\r\n

A CompactRIO system is configured as a complete architecture, not as a controller alone. The selected controller, chassis, C Series modules, terminal accessories, power supply, network interfaces, software environment and FPGA design must all support the required application behavior.<\/p>\r\n <\/div>\r\n\r\n

CompactRIO System Architecture<\/h3>\r\n\r\n
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System Component<\/th>\r\n Primary Function<\/th>\r\n What to Verify<\/th>\r\n <\/tr>\r\n <\/thead>\r\n
\u041a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u044b\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440RIO<\/td>\r\n Runs real-time application logic, communications, logging and supervisory control<\/td>\r\n Processor performance, memory, operating system, network interfaces and software support<\/td>\r\n <\/tr>\r\n
\u0424\u041f\u0413\u0410<\/td>\r\n Executes deterministic timing, custom I\/O processing and high-speed control logic<\/td>\r\n FPGA resources, loop timing, custom logic and required development environment<\/td>\r\n <\/tr>\r\n
C Series I\/O Modules<\/td>\r\n Connect sensors, actuators, networks and external equipment<\/td>\r\n Signal type, range, channel count, conditioning, isolation and chassis compatibility<\/td>\r\n <\/tr>\r\n
Chassis<\/td>\r\n Provides module slots, power distribution, timing and physical system integration<\/td>\r\n Slot count, module support, environmental rating, power and mechanical requirements<\/td>\r\n <\/tr>\r\n
Terminal Blocks and Cables<\/td>\r\n Provide field wiring, connector conversion and module-specific connectivity<\/td>\r\n Pinout, cable type, shielding, sensor wiring and required accessories<\/td>\r\n <\/tr>\r\n
External Power and Networking<\/td>\r\n Support controller operation, communications and integration with surrounding equipment<\/td>\r\n Power quality, grounding, Ethernet architecture, security and startup behavior<\/td>\r\n <\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n\r\n

Why Choose CompactRIO?<\/h3>\r\n\r\n

Real-Time Control<\/h4>\r\n\r\n

CompactRIO supports applications that require predictable software execution for control sequences, monitoring logic, communications and deterministic response. Real-time architecture is important when normal desktop operating-system scheduling could introduce unacceptable timing variation.<\/p>\r\n\r\n

FPGA-Based Processing<\/h4>\r\n\r\n

The FPGA can process signals at the hardware level for custom triggering, pulse generation, encoder handling, protocol decoding, filtering, waveform processing and fast control loops. FPGA logic can operate independently of processor and network activity.<\/p>\r\n\r\n

\u041c\u043e\u0434\u0443\u043b\u044c\u043d\u044b\u0435 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 \u0432\u0432\u043e\u0434\u0430-\u0432\u044b\u0432\u043e\u0434\u0430 \u0441\u0435\u0440\u0438\u0438 C<\/h4>\r\n\r\n

C Series modules allow one CompactRIO system to combine analog, digital, temperature, counter, motion, communication and specialized interfaces. This makes CompactRIO suitable for mixed-signal applications where field devices use different electrical standards.<\/p>\r\n\r\n

Embedded Integration<\/h4>\r\n\r\n

CompactRIO can be integrated into industrial cabinets, test stands, mobile equipment and embedded systems. Final system performance depends on the installed power supply, grounding, enclosure, cable routing, thermal design and environmental conditions.<\/p>\r\n\r\n

How to Select a CompactRIO System<\/h3>\r\n\r\n

1. Define the Application Architecture<\/h4>\r\n\r\n

Identify whether the application is primarily data logging, real-time control, FPGA signal processing, machine automation, hardware-in-the-loop simulation or embedded monitoring. This determines the required controller, chassis, I\/O and software architecture.<\/p>\r\n\r\n

Define the full data and control path: field inputs, signal conditioning, FPGA processing, real-time decision logic, outputs, data logging, operator interface and network communication.<\/p>\r\n\r\n

2. Select the Required C Series I\/O<\/h4>\r\n\r\n

Choose modules according to the actual electrical interface. Record the required voltage or current range, sensor type, output type, excitation requirement, channel count, update rate, isolation requirement and connector arrangement.<\/p>\r\n\r\n

Use dedicated modules when the signal requires specialized conditioning, such as thermocouple cold-junction compensation, RTD excitation, bridge completion, IEPE power, encoder measurement or vehicle-network communication.<\/p>\r\n\r\n

3. Determine FPGA Requirements<\/h4>\r\n\r\n

FPGA development is appropriate when the system needs deterministic timing, fast event response, custom digital logic, specialized filtering, synchronized waveform processing or hardware-level protocol handling.<\/p>\r\n\r\n

Estimate FPGA resource needs for logic, memory, DMA transfers, timing loops, signal processing and future expansion. The required FPGA architecture should be defined before selecting a controller for a complex application.<\/p>\r\n\r\n

4. Evaluate Controller Performance<\/h4>\r\n\r\n

Size the controller for real-time tasks, communication protocols, data logging, user interface services, analysis functions and expected system life cycle. Processor requirements can increase significantly when the system logs high-rate data or communicates with multiple devices.<\/p>\r\n\r\n

Keep deterministic control work separate from noncritical activities such as file writing, web interfaces, remote desktop access and display updates.<\/p>\r\n\r\n

5. Plan Synchronization and Timing<\/h4>\r\n\r\n

Determine whether measurements and control signals need software correlation, hardware triggering, shared clocks or FPGA-level synchronization. This is especially important for motion, power, dynamic signals, high-speed digital events and mixed-module systems.<\/p>\r\n\r\n

Design synchronization for the complete CompactRIO system. Modules installed in one chassis do not automatically provide the timing relationship required for every application.<\/p>\r\n\r\n

6. Review Environmental and Electrical Conditions<\/h4>\r\n\r\n

Confirm operating temperature, vibration, shock, humidity, power quality, grounding, electrical noise and enclosure requirements. Industrial field wiring, motors, relays and long cable runs can affect both measurement quality and controller reliability.<\/p>\r\n\r\n

Use appropriate isolation, protection, shielding and power-distribution practices for the installed environment. Safety functions should be designed separately from ordinary application control logic.<\/p>\r\n\r\n

CompactRIO Software and Development<\/h3>\r\n\r\n

CompactRIO applications can combine real-time software with LabVIEW FPGA programming, depending on the selected controller, I\/O modules and required behavior. The real-time processor commonly manages control sequences, communication, data logging and supervisory functions, while the FPGA handles deterministic I\/O operations.<\/p>\r\n\r\n

Before purchase, verify compatibility with the required NI driver version, LabVIEW version, FPGA tools, real-time software environment and target operating system. Existing applications may require software updates or FPGA recompilation when legacy hardware is replaced.<\/p>\r\n\r\n

A typical application architecture includes:<\/p>\r\n\r\n