PROFINET is not a Star

PROFINET is not a star… but it can be when you want it to be – speaking of topologies, of course; in performance PROFINET is a star! I read the article “Network Behemoth” by Dan Hebert at Control Design which featured this section: Hard to Deal with Stars Dealing with stars can be difficult, whether…

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Five Criteria for Choosing an Industrial Ethernet

As Manny walked the exhibition floor at ISA he encountered device vendors who needed an Industrial Ethernet.  PROFINET would have fit the bill for them, but some were leaning toward something else and some had already chosen something else.  One of those device manufacturers encountered told Manny that Modbus/TCP was the most popular protocol. (Clearly…

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Industrial Ethernet Market Shares

I was asked at a recent PROFINET one-day training class why we didn’t compare PROFINET to SERCOS III.  I answered lamely that we just didn’t encounter it and besides it was a motion control-only bus while PROFINET is a very comprehensive bus of which motion control is only one part.  Today I stumbled upon an…

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Industrial Ethernet in Motion Control

Today I viewed the Automation World webcast “Deterministic Ethernet for Distributed Motion Control” (sponsored by National Instruments).  It’s now available for viewing. It covers EtherCAT, Ethernet/IP, and PROFINET for motion control.  Irene Bearly of NI handled the PROFINET portion very well.  (She learned at one of our free training classes – you should attend one.) …

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Growth of PROFINET and the PI Organization

A report from the 21st PI international meeting in Krakow, Poland: PI Chairman, Joerg Freitag reported that PROFIBUS growth may be flat this year, an anomaly due to the economy.  But despite the economy, PROFINET continues to grow. Speaking of growth, there are currently 25 Regional PI Associations (RPAs) with India in planning as #26…

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Industrial Ethernet Comparisons

EtherCAT held a seminar in our backyard (Scottsdale) this week and I could not pass up the opportunity to find out more about this technology.  (I had already been to an Ethernet/IP seminar a couple years ago.)  I did learn some new things about EtherCAT.  And since we are reciprocating with a PROFINET one-day training…

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Webcast: Ethernet-Based Industrial Communication Protocols

I took part in a webcast sponsored by PTO member National Instruments that covered IEEE1588, PROFINET, and two other Industrial Ethernet protocols.  If you want the 10-minute overview of PROFINET (and some others) you can view the archived version on the Automation World website at http://www.automationworld.com/webcast-5345.

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More SUE

Since this blogging software doesn’t do a good job of sending out comments via RSS, I’m promoting a comment from Gary Mintchell and my response to this post: Hi Carl, I’ve talked with their technical people about apples to apples comparisons. Evidently the message has not reached corporate communications people. It’s not so bad that…

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The Big Lie: SUE

The Big Lie is a propaganda technique. It was defined by Adolf Hitler in his 1925 autobiography Mein Kampf as a lie so “colossal” that no one would believe that someone “could have the impudence to distort the truth so infamously”. [So begins the Wikipedia article Big Lie.] The Big Lie has been widely practiced…

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FUD Dissection Part 2

When I was a new manager (way back when) I had a troublesome employee – Derris was a bit curmudgeonly [Encarta definition: curmudgeonly: somebody who is irritable or stubborn: somebody considered to be bad-tempered, disagreeable, or stubborn]. I consulted with the president of the company trying to figure out how to deal with him. The…

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