Experimental Physics and Industrial Control System

Not really, it is an x-ray controller box that is under warranty so I can't open it. Maybe I shouldn't say interlock. it is basically a box with a key sticking out of it. It already has an led in it. The thing is EPICS knows the status of the key so I was hoping to use that..
________________________________________
From: Maren Purves [[email protected]]
Sent: Thursday, July 11, 2013 6:57 PM
To: Gomella, Andrew (NIH/NHLBI) [F]
Cc: [email protected]
Subject: Re: Simple wireless light controlled through EPICS?

Wondering: can you power a LED from whatever powers the interlock?
(Maybe 'power' isn't the right word here, 'control' would
probably be better)

Gomella, Andrew (NIH/NHLBI) [F] wrote:
> Yes you are right. I guess I'm trying to find something along the lines of a wireless switch that can be easily integrated with EPICS. This is probably trivial for most, the issue here is I cant really run wires room to room (needs to be somewhat temporary solution) and I have multiple doors that need covering (and little experience with EPICS and hardware engineering)
>
> If it were one door, to be honest I'd probably just put an old laptop on a table next to it and just have it on our local wifi network reading out the PV value to a fullscreen display...
>
> Mark's suggestion seems the easiest to implement, but I'm not sure I can run the wires.  The less elegant option is for me to purchase something like this http://www.amazon.com/dp/B000G80V28 and press it every time I turn the x-ray on or off.
>
> Thanks,
> Andrew
> ________________________________________
> From: Maren Purves [[email protected]]
> Sent: Thursday, July 11, 2013 6:29 PM
> To: Gomella, Andrew (NIH/NHLBI) [F]
> Cc: Mark Rivers; [email protected]
> Subject: Re: Simple wireless light controlled through EPICS?
>
> 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
>>
>
>

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]

Re: Simple wireless light controlled through EPICS? Maren Purves

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

Re: Simple wireless light controlled through EPICS? Maren Purves

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