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Commubox FXA291 CDI/USB

Intrinsically safe interface for Smart transmitters. It converts HART protocols to USB signals.

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Commubox FXA291 CDI/USB

Intrinsically safe interface for Smart transmitters. It converts HART protocols to USB signals.

Benefits

  • On-site commissioning of Endress+Hauser field devices
  • Easy to connect field devices with a CDI interface to a computer with a USB interface
  • Power is supplied to Commubox by means of the USB interface
  • Possible to supply power to the field devices by means of the CDI interface
  • Connection to intrinsically safe and non-intrinsically safe field devices
  • Suitable for Endress+Hauser operating programs such as FieldCare
  • CDI/USB driver for the installation on Windows 2000, Windows XP and Windows 7 (x32+x64)
Manufacturer's warranty

Engineered for confidence

Our instruments are designed for long‑lasting performance, precise measurement, and dependable operation in demanding industrial environments. Each product includes a standard manufacturer’s warranty that reflects our commitment to quality and to the trust you place in our solutions.

Should a warranty case occur, the device will be assessed and the applicable remedy will be provided in line with the warranty terms – helping ensure a reliable and efficient resolution and supporting continued operation of your measurement point.

Request for extended warranty

If you require extended warranty coverage, simply contact your local Endress+Hauser representative. Our experts will advise you on the available options to match your application and risk profile, helping you protect your investment, reduce unexpected repair costs, and ensure reliable long‑term operation beyond the manufacturer's warranty period.

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Warranty terms apply

The manufacturer's warranty and extended warranty are subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

Services by your side

Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

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24/7 customer portal

Personalized transaction space

Check prices and delivery times, save your favorite products, create quotes and place orders in just a few clicks and track deliveries at any time. With access to your complete order and quote history including all relevant documents you benefit from full transparency throughout the entire process.

Easy access to technical documentation

Select and download all technical documentation such as operating manuals, calibration certificates, approvals and CAD drawings conveniently bundled as a complete documentation package for your entire order or quote.

My Endress+Hauser – all in one place

My Endress+Hauser is your 24/7 connection to Endress+Hauser – in the office, in the field or on the go. It brings together transaction management, documentation and software downloads, knowledge base access, customer support, engineering tools and cloud‑based IIoT services helping you work easier, faster and more efficiently.

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Office situation support
Have questions about this product?

Product information

Description

The Commubox FXA291 is a intrinsically safe CDI (Endress+Hauser Common Data Interface) interface for transmitters. It converts signals at USB interface. The communication between field devices and computer is realized by direct connection via CDI, via ToF adapter FXA291 or via additional adapter cable.

Field of application

The Commubox FXA291 connects Endress+Hauser field devices with a CDI interface (= Endress+Hauser Common Data Interface) with the USB interface of a computer or laptop. This allows the remote operation and execution of service functions of field devices with the aid of an Endress+Hauser operating program, such as the FieldCare software platform for plant-specific asset management for example. The Commubox is a USB low-power device that is powered by means of the USB interface of the computer.

Benefits
  • On-site commissioning of Endress+Hauser field devices
  • Easy to connect field devices with a CDI interface to a computer with a USB interface
  • Power is supplied to Commubox by means of the USB interface
  • Possible to supply power to the field devices by means of the CDI interface
  • Connection to intrinsically safe and non-intrinsically safe field devices
  • Suitable for Endress+Hauser operating programs such as FieldCare
  • CDI/USB driver for the installation on Windows 2000, Windows XP and Windows 7 (x32+x64)
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