Archive for category HART

Digital Communications Toolkit

We’ve gotten feedback from several people who have asked what I carry around to deal with serial or Ethernet communications issues.  So I dumped out my comm tool bag and here’s the list of all the stuff.

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February 2: A day to look back

Yesterday and today, people all over Chicago and the Midwest were looking at pictures from last year. We had 22″ of snowfall in one day. The roads were closed. The airports were closed. Even the Lesman offices were closed. And today’s weather forecast? 45°… in Chicago… in February.

This morning in Pennsylvania, a groundhog named Phil came out, looked back, and saw… his shadow.

All this looking back made me a little reflective myself. I’ve been writing this blog for about 6 months now. So I thought I’d take a minute and recap the articles people keep coming back to read:

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How does adding a 250-ohm resistor make HART work?

Sometimes there’s a problem getting a loop powered HART instrument to communicate when it’s on the benchtop, but it communicated fine when wired in the field.   Why is that? Read the rest of this entry »

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Which Industrial Wireless is Best for Me?

The answer to the Which Wireless is Best for Me? webinar question is, “it depends”.

With a decade of license-free industrial wireless experience under our belts, I’m confident that there’s a best wireless solution for everyone.  But which technology and network depends on what you’re trying to accomplish.  Some people just need a couple I/O points, others a plant-wide network to handle I/O and WiFi.

If you missed the webinar and want to see and hear the considerations for industrial wireless, go here: http://www.lesman.com/train/webinars/Webinar_Which-Wireless.htm

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