Industrial Networks

Jan 31

Ethernet is not a protocol

Carl’s pet peeve number three*: Ethernet is not a protocol. IMS Research found that the number one industrial Ethernet protocol is “Ethernet TCP/IP.” VDC found the leading industrial Ethernet protocol is “Ethernet.” Ethernet is not a protocol!  I ranted about this before, way back in 2006: “Why Use Industrial Ethernet?”  So today I’ve counted to…

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Apr 21

IO-Link, a natural complement to PROFINET

I thought I would be reporting this week from Hanover Fair, but… well, the transportation to Europe was disrupted.  It’s not the first time my travel has been disrupted; in fact, not even the worst disruption.  At least I’m stuck at home instead of halfway to somewhere like I was on 9/11/2001.  So, I’ll get…

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Mar 29

Wireless Distance to Nashville

In Nashville, I did not answer a question adequately about the ranges for various wireless technologies according to a comment on one Course Evaluation.  Let me remedy that here: The expected distance for the various IEEE802.11 variants (a, b, g, and n) is 100 meters but that will vary based on the antenna used and…

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May 27

Crimping Newark Asset Management

I was in Newark with Manny two weeks ago for the PROFIBUS in the Process Industries one-day training class.  We’ve been doing these classes for over 7 years now and it is amazing that we still get new questions.  In Newark we got a couple misconceptions that need to be addressed.  One attendee could not…

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Dec 10

Asset Management Convergence

Two diverse newsletters recently converged in my email inbox to make me think about asset management. The first one was an e-newsletter from Chemical Processing magazine.  (I’m not sure how I got on their mailing list, but once in a while I see something germane to PROFIBUS and PROFINET.) “The Asset Management Benchmark Report: Moving…

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Dec 9

Hype Cycle for Emerging Technologies

I love graphs.   Clicking on an article in a recent email newsletter brought me to “The Wireless Hype in Process Automation” by Dieter Schaudel at  The wireless part hooked me, but the graph of the Hype Cycle for Emerging Technologies really grabbed me.  It takes us from the Technology Trigger over the Peak…

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May 1

IO-Link, HART for discrete?

IO-Link is a point-to-point wiring system intended for smart sensors and actuators.  It communicates over the discrete device’s wires.  This reminds me of HART in the process space where communication is superimposed over the 4-20mA signal wires.  And similar to HART, you can use an IO-Link device in a standard system and a non-IO-Link device…

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