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Subject: | EPICS, PostgreSQL, Archive Engine: doubts about how to use them |
From: | Oscar Ibañez via Tech-talk <tech-talk at aps.anl.gov> |
To: | "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov> |
Date: | Thu, 12 Jan 2023 09:02:58 +0100 |
Hi,I am trying to set up a PostgreSQL RDMS to work together with EPICS to save some PV values. However, I am having doubts about how to do it, since the process is not clear to me.
First of all, I installed EPICS and I downloaded Phoebus. Both are running with no problem. In addition, I installed PostgreSQL. It seems to work fine. Then, I tried to learn how to connect EPICS and PostgreSQL, and I ended up reading Phoebus documentation about the RDB Archive Engine, and that was the point when I did no understand what I was doing.
https://control-system-studio.readthedocs.io/en/latest/services/archive-engine/doc/index.html The document says that I need to download the archive engine from: https://controlssoftware.sns.ornl.gov/css_phoebus But I can't find any archive engine in that place.In addition, I am confused about the rol of Phoebus in this problem. Why do I need to set up any preference in the Phoebus configuration to use the Archive Engine? Phoebus is just a software to create and to display graphical screen to monitor/check the control system. If I run the Archive Engine, that software will save PV values in the PostgreSQL tables that I want. So, I don't understand the relationship between Phoebus and the Archive Engine, since the documentation is in the CSS web.
Any help would be useful. Regards. Óscar