August 2016

A tale of two couplers: A (not too) brief story of Profibus linking devices

Foreword If you have ever worked with Profibus PA networks, you surely will know about the so called Profibus DP/PA couplers. If not, please allow me to give you a brief resume:   The IEC61158-2 standard The IEC 61158-2 standard, finally approved in 1999, allowed the coexistence of two different technologies for process fieldbus communication …

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A proxy story, part 1, V1.0 (A brief snapshot of Profibus PA to Profinet proxies, with a twist…)

A long time ago In the 90’s, I worked as sysadmin in a small automation supplies distribution company, how I got that job is an interesting story but I’ll reserve it for another time. Back then, broadband Internet access was a corporate luxury, and both cable modem and ADSL services were scarce and really expensive. …

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