Beckhoff EtherCAT measurement technology

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To deliver advanced analytics solutions to their customers, e-matica, a systems integrator and applications development firm and analytics application specialist Seeq have entered a partnership. Read more...

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AX58100 AX58100
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AX88179 AX88179
AX88179 is the world's first USB 3.0 to Gigabit Ethernet controller which integrates USB 3.0 PHY and 10/100/1000Mbps Gigabit Ethernet MAC/PHY in a sin... Read more...

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Technical Articles (Current Issue 113 - July 2019)

  The end of the Fieldbus Wars?
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  Is 5G already robust enough for industry?
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  Cloud-based platforms to drive factory simulation software
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  Simplified Ethernet for rail metro networks using TSN
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  Parameterization & monitoring of Ethernet Hart devices
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Cover: IEB Issue 113
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Hirose: More than 50,000 connectors

FF HSE

The Fieldbus Foundation is the leading organisation dedicated to a single international, interoperable fieldbus standard. Established in September 1994 by a merger of WorldFIP North America and the Interoperable Systems Project (ISP), the foundation is a not-for-profit corporation that consists of more than 350 of the world's leading suppliers and end users of process control and manufacturing automation products. Working together, these companies have provided unparalleled support for a worldwide fieldbus protocol, and have made major contributions to the IEC/ISA fieldbus standards development.


Fieldbus Foundation
9005 Mountain Ridge Drive
Bowie Bldg - Suite 190
Austin, TX 78759-5316
USA
Tel: +1 512 794 8890
Fax +1 512 794 8893
info@fieldbus.org
www.fieldbus.org

Fieldbus FOUNDATION - Technical Overview
FOUNDATION fieldbus is an all-digital, serial, two-way communications system that serves as a Local Area Network (LAN) for factory/plant instrumentation and control devices. The fieldbus environment is the base level group of the digital networks in the hierarchy of plant networks. FOUNDATION fieldbus is used in both process and manufacturing automation applications and has a built-in capability to distribute the control application across the network.

Unlike proprietary network protocols, FOUNDATION fieldbus is neither owned by any individual company, or regulated by a single nation or standards body. The technology is controlled by the Fieldbus Foundation, a not-for-profit organisation consisting of more than 100 of the world's leading controls and instrumentation suppliers and end users.

While FOUNDATION fieldbus retains many of the desirable features of the 4-20 mA analog system, such as a standardised physical interface to the wire, bus-powered devices on a single wire, and intrinsic safety options, it offers a host of additional benefits to users.

Device Interoperability
With interoperability, one fieldbus device can be replaced by a similar device with added functionality from a different supplier on the same fieldbus network while maintaining specified operations. This permits users to "mix and match" field devices and host systems from various suppliers. Individual fieldbus devices can also transmit and receive multivariable information, and communicate directly with each other over a common fieldbus, allowing new devices to be added to the fieldbus without disrupting active control.

Enhanced process data
With FOUNDATION fieldbus, multiple variables from each device can be brought into the plant control system for archival, trend analysis, process optimization studies, and report generation. This access to accurate, high resolution data enables processes to be fine-tuned for better manufacturing throughput and reduced plant downtime. These efficiencies add up to higher plant performance and profitability.

Expanded view of the process
Modern fieldbus devices, with powerful, microprocessor-based communications capabilities, permit process errors to be recognized faster, and with greater certainty. As a result, plant operators are notified of abnormal conditions or the need for preventive maintenance, and can make better production decisions. Problems that detract from operating efficiency are more quickly corrected, enabling yields to go up while raw material costs and regulatory problems decrease.

Improved plant safety
Fieldbus technology will help manufacturing plants keep up with increasingly stringent safety requirements. By providing operators with earlier notification and warning of pending and current hazardous conditions, fieldbus allows for corrective action before an unplanned shutdown. Enhanced plant diagnostic capabilities also reduce the need for frequent access to hazardous areas, thus minimizing the risks to field personnel.

Easier predictive maintenance
Enhanced device diagnostics capabilities make it possible to monitor and record such conditions as valve wear and transmitter fouling. Plant personnel are able to perform predictive maintenance without waiting for a scheduled shutdown, thus avoiding or reducing downtime.

Reduced wiring and maintenance costs
FOUNDATION Fieldbus' use of existing wiring and multi-drop connections provides significant savings in network installation costs. This includes reductions in intrinsic safety barrier termination and cable costs, particularly in areas where wiring is already in place.

Additional cost savings can be achieved through the decreased time required for construction and start-up, as well as simplified programming of control and logic functions using software control blocks built into fieldbus devices.

Two related implementations of FOUNDATION fieldbus have been introduced to meet different needs within the process automation environment. These two implementations use different physical media and communication speeds.

  • H1 works at 31.25 kbit/s and generally connects to field devices. It provides communication and power over standard twisted-pair wiring. H1 is currently the most common implementation.

  • HSE (High-speed Ethernet) works at 100 Mbit/s and generally connects input/output subsystems, host systems, linking devices, gateways, and field devices using standard Ethernet cabling. It doesn't currently provide power over the cable, although work is under way to address this.

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