NATIONAL INSTRUMENTS 190759A-01L Ni Foundation Fieldbus USB-8486 H1 Interface Module

( Brand: National Instruments ), ( Manufacturer Part Number: 190759A-01L ), ( Model: USB-8486 ), ( Part Type: Module )

Review NATIONAL INSTRUMENTS Ni Foundation Fieldbus H1 Interface Module

The **National Instruments NI USB-8486 Foundation Fieldbus H1 Interface Module** is a high-performance, industrial-grade communication device designed to seamlessly integrate Foundation Fieldbus H1 networks into modern automation and control systems. Engineered for reliability and precision, this module serves as a critical bridge between field devices such as sensors, actuators, and transmitters and higher-level control systems, enabling real-time data exchange over the robust, two-wire H1 protocol. With its compact yet rugged USB interface, the USB-8486 provides a straightforward connection to PCs, PLCs, or other control platforms, eliminating the need for additional hardware while maintaining full compliance with the Foundation Fieldbus specification. Built to withstand the demanding conditions of industrial environments, the module features a durable metal enclosure with robust shielding to protect against electromagnetic interference (EMI) and electrical noise, ensuring stable and consistent communication even in harsh settings. Its high-speed USB 2.0 interface delivers low-latency data transfer, making it ideal for applications requiring real-time monitoring and control, such as process automation, oil and gas, water treatment, or manufacturing systems. The device supports a wide range of Foundation Fieldbus devices, including those adhering to the H1 standard s 31.25 kbps data rate, while its integrated diagnostics tools provide comprehensive visibility into network health, device status, and communication errors, simplifying troubleshooting and maintenance. Whether deployed in a control room, on-site at a production facility, or integrated into a larger SCADA system, the NI USB-8486 offers a versatile, scalable solution for engineers and technicians seeking to modernize legacy systems or enhance the efficiency of new installations. Its compatibility with National Instruments LabVIEW and other industry-standard software platforms further extends its utility, allowing for the development of custom applications, data logging, and advanced control strategies with ease.

### **Pros and Cons of buying a National Instruments 190759A-01L NI USB-8486 Foundation Fieldbus H1 Interface Module**

#### **Pros**

1. **Fieldbus Compatibility** The module supports Foundation Fieldbus H1, a widely used industrial communication protocol in process automation. This makes it suitable for integrating legacy or modern Fieldbus-based systems.

2. **USB Connectivity** The USB interface provides a convenient and flexible connection to a PC, eliminating the need for dedicated industrial networking hardware. This simplifies setup and reduces wiring complexity.

3. **NI LabVIEW and NI Software Support** As a National Instruments product, it integrates seamlessly with LabVIEW, NI MAX, and other NI software tools, making it ideal for engineers and technicians already using NI platforms.

4. **Modular and Scalable** The module can be part of a larger NI system, allowing for expansion with additional I/O modules as project requirements grow.

5. **Reliable for Industrial Use** Designed for industrial environments, it offers robust performance in harsh conditions, though specific environmental ratings should be verified for your application.

6. **Developer-Friendly** NI provides extensive documentation, examples, and community support, reducing development time for Fieldbus applications.

7. **Backward Compatibility** Works with existing Fieldbus networks, making it a practical choice for retrofitting or maintaining older systems.

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#### **Cons**

1. **Limited to Fieldbus H1** Unlike some universal I/O modules, this device is **exclusively for Foundation Fieldbus H1**. If your system requires other protocols (e.g., Profibus, Modbus, Ethernet/IP), this module is not suitable.

2. **USB Dependency** Relying on USB for communication means the module cannot operate independently of a PC. For standalone industrial applications, additional hardware (e.g., a USB-to-Ethernet converter) may be needed.

3. **Potential Latency** USB connections, while convenient, may introduce slight latency compared to dedicated industrial Ethernet or serial links, which could be critical in high-speed control applications.

4. **Cost** As a specialized Fieldbus interface, it may be more expensive than generic USB-to-serial adapters, especially if you only need basic communication rather than full Fieldbus integration.

5. **Learning Curve for Fieldbus** Foundation Fieldbus has a steep learning curve, including HSE (High-Speed Ethernet) and FMS (Fieldbus Message Specification) protocols. Engineers unfamiliar with Fieldbus may require additional training.

6. **Limited Physical Ports** The module has a single USB port, meaning you cannot daisy-chain multiple devices through it. Each module requires its own USB connection.

7. **Deprecation Risk** NI occasionally discontinues older products. While this module is still supported, future compatibility with newer NI software or hardware may not be guaranteed.

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### **Conclusion**

The **National Instruments 190759A-01L NI USB-8486** is a **specialized but highly effective solution** for integrating Foundation Fieldbus H1 devices into a LabVIEW-based system. It excels in environments where **Fieldbus compatibility, NI software integration, and USB convenience** are priorities. However, it is **not a general-purpose I/O module** and may be overkill for simple serial communication tasks.

- **Process automation engineers** working with Fieldbus networks.

- **LabVIEW developers** needing seamless integration with Fieldbus devices.

- **Applications requiring USB-based Fieldbus communication** without additional networking hardware.

If your project **does not involve Fieldbus H1** or requires **standalone operation**, alternative solutions (e.g., universal serial adapters, Ethernet-based I/O modules) may be more appropriate.

### **Recommendation**

- You are working with **Foundation Fieldbus H1** and need **LabVIEW integration**.

- Your system **already uses NI hardware/software**, and USB connectivity is acceptable.

- You prioritize **industrial reliability** and **modular scalability** within an NI ecosystem.

- You need **other communication protocols** (e.g., Profibus, Modbus).

- Your application requires **standalone operation** without PC dependency.

- You are looking for a **cost-effective, general-purpose USB-to-serial adapter** rather than a Fieldbus-specific solution.

For long-term projects, **verify NI s current support status** and consider whether future-proofing (e.g., Ethernet-based alternatives) might be more advantageous.

Details:

Pre Owned National Instruments Foundation Fieldbus H1 interface module. M/N USB-8486 P/N 190759A-O1L, 190759A-O1L.

part #: 190759a01l prices

• $1500.00-$2751.20

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• brand: National Instruments
• mpn: 190759a-01l
• model: Usb-8486
• part type: Module

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• Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment

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• started: March 27, 2026
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