Virtual sensor mode hickup..

Junior Member

Virtual sensor mode hickup..

Dienstag, 3. Mai 2011, 12:59

Well got it to not go wayhack on my today, and so started to play with the posiblities.
If I've create a virtual sensor (Sensor1-Sensor2), and Sensor1 shows 21,0 and Sensor2 show 20,8 then Virtual sensor1 shows 0,2.
But if Sensor1 show 21,0 and Sensor2 shows 21,2, Virtual sensor1 still shows 0,2 :wacko:

Then holding Sensor2, I've get this:
Sensor1 shows: 21,0
Sensor2 shows: 36,2
Virtual sensor shows: 15,2
The difference is -15,2 - so what is happening here?
Should I've scelect absoult mode insted, to get -15,2?

sebastian

Administrator

Beiträge: 10 519

Dienstag, 3. Mai 2011, 13:37

Select the mode: Difference (Sensor1-Sensor2)
then is: Sensor1: 20, Sensor2:21 => Virtual sensor: -1

Selected mode: Difference absolute
then is: Sensor1: 20, Sensor2:21 => Virtual sensor: +1

MStauning

Junior Member

Beiträge: 37

Dienstag, 3. Mai 2011, 13:41

My mode is differnce, just made a Virtual Sensor2 that have absoulte differnce..
They agree no matter what I've do..
So if Sensor1: 21,0
And Sensor2: 7,0
Both says: 14,0
If Sensor2: 21,0
And Sensor1: 7,0
Both says: 14,0...
None of them says -14,0

sebastian

Administrator

Beiträge: 10 519

Dienstag, 3. Mai 2011, 13:47

this is correct:

Difference = Sensor 1 - Sensor 2

Sensor 1 = 21
Sensor 2 = 7
delta T = 14

but:
Sensor 1 = 7
Sensor 2 = 21
delta T = -14

MStauning

Junior Member

Beiträge: 37

Mittwoch, 4. Mai 2011, 09:42

That is just what I've want, but dont get...

If

Sensor1 = 7

Sensor2 = 21

Then Virtual Sensor1 = 14

If

Sensor1 = 21

Sensor2 = 7

The Virtual Sensor1 = 14

This is with mode set to difference.

Virtual Sensor2, is made with mode set to Differnce absoulte. And both Virtual Sensor1 and Virtual Sensor2, allways shows the same = 14.

Something wrong here

sebastian

Administrator

Beiträge: 10 519