Jul 6

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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Jun 18

Is PROFINET routable? (Report from Vancouver)

The question came up at the PROFINET one-day training class in Vancouver: “Is PROFINET routable?”  In other words, can PROFINET messages be sent through a router? First, a little background.  In an Ethernet network, several types of device can be used: hubs, switches, and routers.  Each works at a different layer of the ISO/OSI reference…

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Jun 17

23-minute Intro to PROFINET

I was one of four presenters at GlobalSpec’s virtual conference and exhibit.  If you need a really brief introduction to PROFINET, the presentation is archived in the “Conference Center” there.  I wasn’t able to answer all the questions, but look for a document with all the questions answered on the site as well.

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May 13

Problem Solving in PROFINET Class

I started this on the plane back from Jacksonville and I’m finishing it on the plane to Newark for the Process one-day training class.  (It’s tomorrow, May 14, at the Newark airport.  We have arranged for free parking at the hotel.)  In between I had to put the finishing touches on PROFInews North American Edition…

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Apr 20

PROFINET in Austin

There were 45 of us in Austin for the PROFINET one-day training class.  Not many compared to the previous day’s PROFIBUS class in Pittsburgh with 102, but still a very engaged group posing lots of questions for us. So many questions that we did not finish until 5:00 pm!  Despite the late finish, most thought…

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Apr 10

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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Apr 3

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

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Dec 19

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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Dec 17

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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Feb 12

Switch Education

“When Should I Invest in a Managed Ethernet Switch?” is the question posed in the latest issue of the Industrial Ethernet Book.  I’ve heard it said elsewhere that you’ll either use a managed switch or wish you had.  The logic is that an unmanaged switch has diagnostic information consisting of blinking LEDs.  If your line…

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