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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