Experimental Physics and
Industrial Control System

"Johnson, Andrew N. via Tech-talk" <tech-talk at aps.anl.gov> · Tue, 6 Apr 2021 02:06:00 +0000

Hi Óscar,

On Apr 3, 2021, at 7:18 AM, Oscar Ibañez via Tech-talk <tech-talk at aps.anl.gov> wrote:
> 
> My name is Óscar, from Spain, and this is my first message to Tech-talk.

Welcome to the EPICS community!

> I am writing because I have an initiation doubt about EPICS and, more specifically, about Control System Studio Phoebus. In particular, I can't find documentation about how to program scripts using Python and Javascript. The different classes that are available, their special objets ("display", "widgets" and so on) and their methods/attributes are unknown for me. Inside Phoebus there are some examples, but they are not a formal documentation. Just a glance about some programming possibilities. On the Internet, in the wild, I have found some pieces of information, but some of them not even work when I try to use them.

This kind of question gets asked reasonably often, but in the experience of the longer-term members of this community running scripts in the GUI tool is often not the best approach to programming a control system. Now if the project you’re working on is not intended to last for a long time that might not matter, but for a control system that will have to be maintained for many years we don’t recommend it, hence the lack of detailed documentation.

I would like to suggest that you read the recent tech-talk reply to Adam at https://epics.anl.gov/tech-talk/2021/msg00549.php and think about some of the questions Kay asked applied to your problem, and also read the subsequent replies in the same thread.

- Andrew

-- 
Complexity comes for free, simplicity you have to work for.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System