Experimental Physics and
Industrial Control System

I think you are asking the wrong question.  You don’t need a special medm widget for that, the standard widgets can be used.

 

You do probably need 2 things:

 

1) A feedback record.  The EPICS epid record can be used for this.  It can read the temperature from your readout device and control the power to a power supply using a D/A converter, for example.

 

2) Some other record or client to control the setpoint of the feedback record.  You could use the sscan record in table mode to generate an arbitrary temperature profile, for example. Or you could use a client like Python, IDL, etc.

 

I have attached a screen shot of one of our temperature control screens.  At the time I took this screen shot the thermocouple was broken, so the temperature reading is meaningless, but you get the idea.

 

Mark