easy-forum
English Support - Software => easySoft => Thema gestartet von: jolatouffe am November 03, 2012, 10:20:53 Vormittag
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Hi all,
Sorry for my poor English, I'm French.
In fact I have a little trouble at work.
I have to do a little ventilation control.
Material : Eaton Easy822-DC-TC module an EASY_DC_ME. 2 PT100 temperature probe.
In fact I have a room to be ventilated. Ventilation must engage in the room when it is >24°C, otherwise the fan is off.
If the outdoor temperature is <20°C the air is forced inside the room, and if the outdoor temperature is >20°C the air is extracted from the room.
Can you help me with the programming because I have a lot of shortcomings, and I have already spent a long time for no result...
Thank you in advance.
Jo
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Hi Jo
You can`t connect directly PT100 sensors on Easy822. Use PT100/0-10V converter (for example http://www.conrad.de/ce/de/product/197528/Enda-MU-PT100-U010-50100-Temperatur-Messumformer-fuer-Pt-100 (http://www.conrad.de/ce/de/product/197528/Enda-MU-PT100-U010-50100-Temperatur-Messumformer-fuer-Pt-100) )
Attached please find a small sample.
regards Thomas
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Hi Thomas
Rectification,
Material : Eaton Easy822-DC-TC module and EASY406_DC_ME. 2 PT100 temperature probe.
More one question...
I have work with MW as memory in my program, but when the power shut down, or Start/Stop, everything stored in MW's case are erase.
What can I do?
Thank's
Jo
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Hi Thomas,
Thank you for your example.
In attachment I put the program I have made.
I thought I could do it like that, with the easy406-DC-ME.
I look the value of sensors that come in MW, and I work with the values for making comparisons.
The problem is that I can not save the MW, the disappear all th time.
Thank you for taking time to help me, it is very nice.
Jo
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Hey there,
you can either set the remanency of MB in the System Settings of your Project, ( To Save MW18 for example, which cointains a 2 Byte Value, you have to save MB 35-36), or you can store the values in one or more DBs and set the Remanency of DB in your System Settings.
Cheers,
Spellbreaker
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Hi Spellbreaker,
I don't understand how I have to do.
In my program I have the values :
MW10= 231
MW30= 285
How can I convert this in MB?
Thanks for the answer
Jo
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Hi Jo
MW10 includes MB19+20. Have a look on Juergen`s MB/MW table http://easy-forum.net/index.php?action=dlattach;topic=1150.0;attach=450 (http://easy-forum.net/index.php?action=dlattach;topic=1150.0;attach=450)
Please read easy800 manual, chapter 4.4 to.
regards Thomas
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Hi Thomas and Spellbreaker,
Thank you very much for your time and your help.
My program is ok and my regulation work.
Jo