EPICS Controls Argonne National Laboratory

Experimental Physics and
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Subject: Re: Simple wireless light controlled through EPICS?
From: Maren Purves <[email protected]>
To: "Gomella, Andrew (NIH/NHLBI) [F]" <[email protected]>
Cc: "[email protected]" <[email protected]>
Date: Thu, 11 Jul 2013 12:29:07 -1000
Maybe I'm off, but IMHO you need a switch (that you plug the light
into) with a (serial or otherwise) control rather than the light
being controlled itself?

Maren

Gomella, Andrew (NIH/NHLBI) [F] wrote:
The interlock came hardwired into our x-ray controller box. It's value can be read with the asyn stream driver and is a BO variable that reads whether the key is in the armed position or not. I was hoping to use this value to trigger lights on or off.  Unfortunately I can't modify anything with the x-ray controller, so I figure there has to be some sort of USB light on the market that runs on serial commands? Or maybe such a specific thing does not exist and requires a micro-controller and some work to make.
________________________________________
From: Mark Rivers [[email protected]]
Sent: Thursday, July 11, 2013 6:02 PM
To: Gomella, Andrew (NIH/NHLBI) [F]; [email protected]
Subject: RE: Simple wireless light controlled through EPICS?

How is your interlock done?  Simple relays or with a PLC?  Our laser interlocks here at APS use inexpensive PLCs, and they directly operate the warning lights outside the enclosure.

Mark


-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Gomella, Andrew (NIH/NHLBI) [F]
Sent: Thursday, July 11, 2013 4:57 PM
To: [email protected]
Subject: Simple wireless light controlled through EPICS?

Anyone have any suggestions for a simple way to control a light with EPICS? It does not need to be bright, even a small LED will do. Basically I'm trying to have indicators on several doorways to show the current status of the interlock on our x-ray source (which is already a PV).

In the ideal scenario it would be connected to wifi so that ethernet/usb cables do not need to be run everywhere. I was thinking of maybe trying to get the "Belkin WeMo Home Automation Switch" to work with EPICS, it is basically a power plug that connects to WiFi. But it is probably easier to find some USB LEDs and run cables.

I know some beamlines at APS have EPICS controlled lights, so wondering if anyone has ideas?


Thanks!
Andrew



Replies:
RE: Simple wireless light controlled through EPICS? Gomella, Andrew (NIH/NHLBI) [F]
References:
Simple wireless light controlled through EPICS? Gomella, Andrew (NIH/NHLBI) [F]
RE: Simple wireless light controlled through EPICS? Mark Rivers
RE: Simple wireless light controlled through EPICS? Gomella, Andrew (NIH/NHLBI) [F]

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