OSCAT Forum
oscat.lib => oscat.lib fuer CoDeSys 3 => Thema gestartet von: Vinnie_VdB am 05. Juli 2012, 18:24:01
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Hello people, I am able to read German but just can't write it. I am a user of SoMachine software for both Schneider M268 and M258 PLC's. More and more do I start using them for HVAC solutions and found already a few FB's for calculating Enthalpy but what would really help is a HX calculator.
Oscat in general was a revelation when I was told about this extensive library but like written above could an HX FB really be a worthy add-on to any upcoming release.
It's a FB that has basically 3 inputs
- dry bulb temperature (regular air temperature in °C) with accuracy of 0.1°C
- % relative humidity ranging from 0 to 100% with accuracy of 0.1%RH
- atmospheric pressure in Pascal (Pa)
And then 3 outputs:
- Absolute humidity in grams/kilo air with accuracy of 0.1g/kg
- Enthalpy in kcal/kg air with an accuracy of 0.001 kcal/kg
- DewPoint temperature in °C
As this is regular HVAC is the input temperature never going to be anywhere between -50.0°C and +50.0°C (and so will the dew temperature)
Attached to this post is an Excel document that is showing the calculations to reach the 3 output results.
Sorry for writing this in English but German is not an option as this would be for all of us unreadable ;).
Thank you and keep up the good work.
Should anyone however is able to put this in a FB separately it would be much appreciated.
[gelöscht durch Administrator]
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Can a moderator please move this post to "oscat.lib für CoDeSys 3"?
Thank you already.
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If you are still interested, please write here or send me an email, i do have the routine written.