profinet

Feb 28

PROFINET Cables: Fiber Optics

Fiber optic cables offer specific benefits over copper. They are usually implemented in areas with electromagnetic interference or significant ground potential differences. Fiber optic connections can completely remove problems caused by electromagnetic interference and ground equalization currents flowing in copper cable shields/screens. Some benefits of optical fibers over copper cables are: Optical fiber cables usually…

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Aug 22

PROFI Mnemonics

I’m a big fan of mnemonics. A mnemonic, /nɛˈmɑːnɪk/ (the first “m” is silent) device, or memory device, is any learning technique that aids information retention in the human memory per Wikipedia. In school, you may have learned a mnemonic to remember the Great Lakes: HOMES, Huron, Ontario, Michigan, Erie, Superior. I learned the resistor…

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Jun 27

We’re Number One

PI does not get to say that PROFINET is the best Industrial Ethernet; the market gets to say that. Which is why I was amused to see a technology that’s in fifth place in the market tout why they’re better than all the other Industrial Ethernets. The market has assigned them their place and it’s…

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Apr 11

Completing a PROFINET Project

What’s the logical sequence to use to describe PROFINET? For the one-day training classes, we put everything in the context of the PROFINET of Things (IIoT and Industrie 4.0). For the PROFINET introduction webinar, we went from definition to use in application spaces (factory, process, motion) to features. For the PROFINET System Description, we moved…

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Apr 4

PROFINET is 100% Buzzword Compliant

In order for your product or technology to succeed you have to be able to “check the right boxes.” PROFINET checks all the right boxes making it 100% buzzword compliant. These are some of the buzzwords we encounter in industrial automation today: Ethernet, Real-Time, TSN, Big Data, Analytics, Industrial Internet of Things, and Industrie 4.0.…

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Mar 21

PROFINET Can (Still) Use a Cheap Switch

If you want to get someone to remember something you can’t repeat it too many times. Case in point: I saw another new blog post from someone who thinks you cannot use a standard Ethernet switch for PROFINET.    YOU CAN! Seven years ago, I blogged that PROFINET can use a Best Buy Ethernet Switch, really?…

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Mar 7

What Should I Do about TSN?

TSN = Time Sensitive Networking. It’s a catchall name for a series of new standards whose goal is to improve determinism in “standard” Ethernet networks. It grew out of the needs of Audio/Visual delivery. Naturally, a new organization grew to further the effort: “The Avnu Alliance is a community creating an interoperable ecosystem servicing the…

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Feb 14

Spring – When a Young Man’s Fancy Turns to PROFINET

Yesterday was the official start of spring (because that’s when pitchers and catchers reported for baseball’s Spring Training). There are a lot of similarities between baseball and PROFINET: Green.  They are both associated with the color green. Green grass on which to play baseball; green cable over which to send PROFINET. Pitch speed. Some pitchers’…

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Feb 14

Spring – When a Young Man's Fancy Turns to PROFINET

Yesterday was the official start of spring (because that’s when pitchers and catchers reported for baseball’s Spring Training). There are a lot of similarities between baseball and PROFINET: Green.  They are both associated with the color green. Green grass on which to play baseball; green cable over which to send PROFINET. Pitch speed. Some pitchers’…

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Feb 7

Worried about Bandwidth?

Worried about Bandwidth? Some students at our Long Beach PROFINET one-day training class were. It’s definitely something to think about. Here’s a start: There’s never a substitute for doing the engineering. PROFINET messages tend to be small. But design your topology to minimize the chance of using too much bandwidth. You can use line topology,…

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