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Using Elk Voltage Levels with eisy Math Functions


PLCGuy
Go to solution Solved by PLCGuy,

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Posted

Is there any way to take the voltage level from an Elk Zone and use it in an eisy math function? I currently have an exceptionally ugly set of IF statements in my old ISY-994 that has 100 variations of the following:

===================================================================================

Chk02xVolt - [ID 0036][Parent 004D]

Folder Conditions for 'Chk02xVolt'

If

        Elk Zone 'Water Level' 'Voltage' >= 2.0 Volts

    And Elk Zone 'Water Level' 'Voltage' <= 2.9 Volts

Then

   Allow the programs in this folder to run.

 -----------------------------------------------------------------------------------

Chk020Volt - [ID 0016][Parent 0036]

If

        Elk Zone 'Water Level' 'Voltage' is 2.0 Volts

 Then

        $ElkVoltageX10  = 20

Else

   - No Actions - (To add one, press 'Action')

Test if the Elk Voltage is 2.0 Volts and if so, set $ElkVoltageX10 to 20 (i.e. ten times the voltage)

-----------------------------------------------------------------------------------

and so on...

Is there a nicer way to do this in the esiy using the Elk Node Server?

  • Solution
Posted

Never mind... found the answer and all seems to be working well 😄

 

WaterLvlCalc - [ID 0012][Parent 0013]

If
        'Alarm / House Alarm System / KitchenKeypad' is switched F4
 
Then
        $ElkWtrVoltage  = 'Alarm / House Alarm System / Water Level' Voltage Volts
        Wait  2 seconds
        $WtrGallons  = 10
        $WtrGallons *= $ElkWtrVoltage
        $WtrGallons *= $SlopeDiv10
        $WtrGallons -= $Offset
        $WtrLvl  = $WtrGallons
        $WtrLvl /= $GallonsPerInch
        Set 'Alarm / House Alarm System' Display Message
        $State_LvlCalc  = 1
        Wait  10 seconds
        Set 'Alarm / House Alarm System' Clear Message
 
Else
   - No Actions - (To add one, press 'Action')
 
Wait for a trigger to calculate cistern $WtrGallons (= 10 x $ElkWtrVoltage x $SlopeDiv10 - $Offset), $WtrLvL = ($WtrGallons / $GallonsPerInch), and then display the level on the Elk Keypad

 

Cistern Water Level .jpeg

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