eurotherm 815P Temperature controller

[havok]

Im trying to write a vi to control a Eurotherm 815P Temperature controller.

Attched below is a jpeg of  what a planned run of the temperature controller would be like.

The vi i would like to write should be able to accept the Dwelltimes, Temperature Setpoints(TSP) and Ramprates(RMP) and then start a run.

I would appreciate any help that can be provided on how to read and control the temperature controller Dwelltimes,Setpoints and ramprates.

Currently using Labview 2010. Eurotherm 815P/TC/4MA20/CRLY/

[havok]

At the Moment i am able to read the SP and PV values from the eurotherm but this is all i'm able to do. Need to figure out how to conrol the eurotherm

[LindyHop]

Hello havok,

it sounds like you're able to communicate with the device in some capacity. Is your question about how to set up your code or how to configure your device? If it's the former, would you mind posting your code so the forums can see what you're doing? If it's the latter, then I would suggest going here and searching for "815". The Engineers manual provides all of the commands that the device accepts. And the users manual may prove useful as well.

[havok]

My question is on how to set up the code.

Below is the code i'm using to read data from my Eurotherm 815. Just reading the PV and SP values. For some reason i can't seem to post the vi's so i'm going to post the code in jpg. its not to big

I need to figure out how to set up the code to write values to the eurotherm like the setpoints,dwelltimes, ramprates

[Dennis_Knutson]

Without the manual or the instrument, in not sure what help anyone can give. Attach your manual. Have you asked the vendor for help for the correct commands?

p.s. Your front panel does not show anything for the VISA Resource. I don't think you are reading anything. Of you had an error indicator, it would show this problem.

[havok]

Here are a few of the PDF Manuals i've found for the Eurotherm 815p. I've tried asking the vendor but have not heard back from them yet. the 815p seems to be a very old temperature controller. I've noticed that you guys have drivers for Eurotherm Controllers just none that work with this sepcific eurotherm.

That was just a print screen from when i opened the vi without running it. the VISA resource is attached to comm port 9 and when i run the vi's i am able to read back the values that i can see on the Eurotherm display so i can confirm that the results that i'm seeing so far are correct and i'm able to read the Setpoint and Process Variable (ie SP and PV) from the device.  I was able to change the PV and SP values manually on the 815p to confirm that the results i was reading from my vi's  where in fact correct and in real time and they where.

If you look at the Parameter mnemonics the PV and SP parameters are read only.  The other parameters that i need to write to are read/write.

[havok]

and a couple more 815p pdfs

[new_ingenieur]

Hi Havok,

Where do you find this command : \044422PV\05 ?? because I have a eurotherm 2407 and i wan't to acquire pv and sp

thanks 

[new_ingenieur]

sorry it is 2704

[LindyHop]

Hello new_ingenieur,

Your best bet is to refer to your devices manual. All of the VISA commands the device accepts should be listed there.