Hi Chris,
We have several Eurotherm controllers at Diamond Light Source
for use in sample environments, including the 2704. We have developed
some generic EPICS support for the 2000 series with StreamDevice (using the
EIBisynch interface). This basically allows you to set it into
manual/automatic mode, change the setpoint, ramp rate and PID parameters.
So far we have only tried it out for a single control loop. It works
fine, but this interface is quite limited and to really delve into the full
capability of the 2704 you need to use Modbus. This is on my ‘to-do’
list but I haven’t had time to get started on it yet.
As a more general comment, our experience is that the 2704 seems
to be extremely configurable, but this means it comes with a fairly steep
learning curve. The Modbus and EIBisynch interface documentation is a
little obscure (at least to a non-expert!) but so far I have had a good
response from the Eurotherm technical support team which is encouraging.
If you’re interested in the StreamDevice support we
already have, let me know and we will put it up on our website for you to
download.
Hope that helps,
Emma
I am developing an automated vacuum bakeout station for
CHESS at Cornell University. I have been searching for temperature controllers
which allow for 10 (or more) PID control loops, and have come across the
Eurotherm 2704VC controller (this particular controller has extra inputs and
outputs for vacuum equipment).
Another goal of the project, in addition to building a working bakeout station,
is to use, and learn more about, the EPICS control system. I have found support
written originally for the Eurotherm 800 series controllers on the Modules
page, and have been told it works for the 2000 series even though it should
not.
I am wondering if anyone has developed support specifically for the 2704
Eurotherm controller using the newer Modbus module or StreamDevice methods (or
other newer methods), as these were not available when the support for the
Eurotherm 800 series was developed.
Suggestions or comments about using the Eurotherm 2704/2500 temperature
controllers for this application would also be welcomed.
Thank you for your help.
Chris Whiting
CHESS
Cornell University
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