Voices: Rezabek

Wired or Wireless Revisited

John Rezabek Wonders If the Future Automation Plant Will Be Completely Wireless or If the Copper Wires and Cables Will Be Necessary

By John Rezabek

What if you worked in a plant with infrastructure for both wireless, such as  WirelessHART or ISA 100.11a, as well as fieldbus, such as Foundation fieldbus or Profibus PA? When a new application requires some measurements to be integrated with the DCS, what network technology would get you the best bang for the buck? This is a challenge we faced a couple months ago, and the solution we installed might surprise you.

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08/02/2011

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The Incremental Costs to Add Spurs to These Fieldbus Segments make WirelessHART at Best a Break-Even Option in Many Circumstances

08/30/2010

Failed Bus Blame Game

If You Allow Yourself to Be Dour, Defeated and Critical of Your Selected System, You Could Be Headed for Disaster

04/09/2010

Fieldbus Flavor of the Month

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01/03/2013

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06/11/2013

Fieldbus for Safety Instrumented Functions

FF-SIF Transcends the Limitations of Conventional Safety System Design by Introducing New and Innovative Ways of Thinking About Safety

06/12/2008

Fieldbus is Dead! Long Live Fieldbus!

The Competing Communications Technology That Presumably Will Replace All These Buses, Including Process Fieldbuses, Is Ethernet

05/02/2013

Fieldbus on a Shoestring

Use the Wire You Have. Unless You’re Really Challenging the Limits of the Physical Layer, Ordinary Twisted/Shielded Pair Will Work Reliably

01/12/2009

Fieldbus-Where's the Love?

How Does Fieldbus Bring Flux and Uncertainty Where There Used to Be Order?

02/14/2011

Fieldbus: Do Fence Me In!

Just Because You Can Put 12 Devices on Each Fieldbus Segment, Doesn't Mean You Should

01/14/2014

Fieldbus: Lion or Lamb?

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03/09/2011

Finally, Registered Hosts

"Compliant Host" Came to Be Because Users Were Seeking Objective Ways to Evaluate Different Hosts's Capabilities

07/13/2009

Finding Freebies in Fieldbus

Can We Use the Standard Deviation Method to Flag a Suspicious Measurement?

03/02/2009

Foolproof Fieldbus II

Sometimes Our Well-Intentioned Attempts to Make a System "Foolproof" Create as Many Hazards as We Were Aiming to Prevent

11/07/2013

Forays into Fieldbus Technology Pay Off

Plenty of Training Resources Available to Get Team On Board

06/26/2014

How Can Incompatible DCS and Asset Management Suppliers Get Along?

One Throat to Choke: When a Site Has an Installed Base of Incompatible DCS and Asset Management Suppliers, It May Have to Revert to the Host's Offerings

09/04/2012

How's Your Fieldbus Resume?

What Kind of Qualifications Should You Be Displaying to Qualify for the Jobs That Are Available?

10/12/2009

Hungry for Open Network Protocol Standards

You Just Can't Be Apple to Your Customer and Control Every Widget You Sell

09/08/2014

Instrinsic Safety Obsolete Yet?

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03/07/2008

Is Field-Based Control More Secure?

If We Hide Our Controls in Field Devices, Are We More Immune From the Infections of the Higher-Level Networks?

04/03/2013