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When I first put my hands on IEC-62881-2018, I expected to find many answers there, to questions frequently asked, but it came out it is 15 pages standard (including bibliography) and I didn't find the answers, that I needed. It has some useful information though. ------------------------------ ...

IMHO, HH, LL still need to be referred as 'Alarm' the same way 'H' and 'L' are referred, although it may differ in certain cases. These are Alarm limits when violated by the Process Variable (PV) have specific consequence, the consequence could be deviation from the process envelop, ...

For waste water plants, you can try industrial Wi-Fi radio communication, which will work as a wireless backbone for data communication between the PLCs and SCADA HMIs. Also, there are 4G LTE cellular modems that will work as data communication between two remote locations. ...

Hello Mr James: Thank you for considering this topic in the future. At least in my case, I joined ISA just late last year, and I hope to help in improving or giving feeback at least in the topics which I believe I have experience enough. Cheers! ------------------------------ ...

Welcome Maxwell! You have come to the right place if you are looking to advance your skills and knowledge in automation. You will get a lot of great advice from experts in this discussion forum, and you can buy authoritative books and guides from the ISA bookstore. Make sure ...

Thank you for the reply. Do you have this workbook available? I have send @Michael Medoff a message. ------------------------------ Tim Bouman Rotterdam ------------------------------