Configuring AVEVA Adapters - Configure Data Selection

All references mentioned in the video can be found in the full class. A purchase also will give you access to the virtual environment used in these videos.

00:00 Introduction
00:11 Data Filters
00:33 edgecmd get datafilters
01:04 edgecmd edit datafilters
01:59 edgecmd add datafilters
03:29 Data Selection
03:45 Extract Data Discovery Result
04:35 Edit Data Discovery Result
6:28 Import edited Data Discovery Result as Data Selection
7:03 Review Logs
7:34 Summary

------

Copyright © 2023 AVEVA Solutions Limited. All rights reserved. AVEVA Solutions Limited is owned by AVEVA Group. AVEVA, the AVEVA logos and AVEVA product names are trademarks or registered trademarks of AVEVA Group or its subsidiaries in the United Kingdom and other countries.

[alistairfrith]

Looking at 03:23, it appears that if the value varies between 9 and 11 for 3 days and then jumps to 30, only the 30 will get sent. If the tag is Step=0 then a trend will show this as a line sloping steadily up from 10 to 30 over a 3-day period. Interfaces also used to send the previous value (possibly generating it themselves if the server has not provided it) but I understand that connectors did not do this and it seems that Adapters don't either.

If we set Step=1 then I think compression also works differently, not applying the Swinging Door algorithm.

Is there a way around this or should we be configuring all these tags as Step=1 and suffering less efficient compression?