Voices: Inside Fieldbus

Anyone watching your assets?

Every system benefits from having properly trained individuals examining diagnostics and error messages, but fieldbus has the power to free those savvy techs from tedious hours watching screens.

By John Rezabek

By John Rezabek, Contributing Editor

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More from this voice

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Users driving the bus

Contributing Editor John Rezabek provides commentary on end-user participation in councils and committees, formulating directions and priorities as a valuable service to the supplier community.

04/05/2007

Not jazzed about fieldbus? Try it

Columnist John Rezabek notes that most systems now have excellent engineering tools and allow easy integration of fieldbus devices, so there are ever-fewer excuses not to try some truly distributed control.

03/01/2007

Still pondering whither fieldbus?

In this month's installment of On the Bus, Contributing Editor John Rezabek predicts HART devices will work so well that your career may be over before you can justify the cost to replace them with fieldbus.

02/01/2007

Physical layer diagnostics: Part II

In this month’s installment of On the Bus, process control specialist John Rezabek summarizes the current and soon-to-be-released offerings of four of the leading suppliers of physical-layer hardware.

01/05/2007

Physical layer diagnostics: Who needs them?

In this month’s installment of On the Bus, process control specialist John Rezabek explains the difficulties of getting a quality installation of physical-layer hardware for fieldbus diagnostics.

12/11/2006

New maintenance strategy: Don’t break it!

CONTROL contributing editor and pioneering Foundation fieldbus user John Rezabek provides analysis and commentary on the ultimate preventive, predictive, proactive and preemptive maintenance strategy.

11/01/2006

Data validation: Jewel in the fieldbus crown?

Many users and most suppliers to the industry see process availability as the big payout benefit of Foundation Fieldbus (FF) diagnostics—a good portion of it realized through data validation.

10/10/2006

Wean process off the redundancy pacifier

With Foundation fieldbus, the old redundancy paradigm no longer applies, so where should we apply it to achieve the fault tolerance we need? Contributing Editor John Rezabek provides analysis and commentary.

09/08/2006

Why users need one twisted-pair bus

We have a new contributing editor, John Rezabek, taking over the On the Bus column on ControlGlobal.com. Rezabek is a well-known fieldbus expert and process control specialist at ISP Corp. in Lima, Ohio.

08/07/2006

The FAT is the problem

End users need to revisit their expectations of the Factory Acceptance Test (FAT) and accept that not every loop needs to be tested in order to implement a successful fieldbus project.

07/14/2006

Fieldbus in biopharma applications, Part 1

This article highlights issues associated with the installation of a multiple-fieldbus control system at a pharma processing facility and talks about its implications for handling an entire manufacturing suite.

07/14/2006

Take the Foundation Fieldbus Lifecycle Benefits Survey 2006

The purpose of this survey is to ascertain a more accurate view of the operational, maintenance, and engineering benefits related to Foundation fieldbus and how they relate to a business value proposition for end users.

07/05/2006

Show me the installations

End users are beginning to realize that it’s the maintenance and diagnostic information capabilities of devices that will provide the life cycle savings and justification for installing new fieldbus technologies.

06/07/2006

Fieldbus technology's next biggest hurdle

If you’re a skid or modular assembly manufacturer and want to differentiate yourself from the crowd, offering digital communications and fieldbus technology could be the ticket.

05/05/2006

Unified theory of everthing

The big problem is that control systems don’t all support OPC the same way or to the same degree, so there’s often no consistent way to capture and transmit even simple items like the status bit of a transmitter.

04/07/2006

Networking data not for dummies

By using process variable (PV) and Status information only, you can effectively take a small sip from the fire hose of information available with today’s smart transmitters. Be careful you don’t get soaked!

03/14/2006

Is FDT good for fieldbus and device networks?

CONTROL’s Ian Verhappen, Chair of the Fieldbus Foundation User Group, looks at the latest battleground in the Fieldbus Wars. Is this Fieldbus Wars II or can FDT/DTM and EDDL work together?

02/10/2006

The house that function blocks built

Ian Verhappen, Chair of the Foundation Fieldbus User Group and Vice President of Standards for ISA, offers his perspective and experience on what’s happening in the world of industrial fieldbus.

12/20/2005

Intrinsically safe fieldbus applications

This article takes a look at ways companies get around limited power and other hazardous environment barriers to connect more fieldbus devices using a technology that goes beyond FISCO.

11/22/2005

Largest Foundation fieldbus complex completed

SECCO’s petrochem process facility goes from bare ground to on line in 27 months using a main instrument vendor to engineer and implement automation and control systems, and manage its multiple suppliers.

11/10/2005