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  1. #1
    Join Date
    Jan 2012
    Location
    Denver
    Posts
    35
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    Delta GCL+ Cycle Timer

    Good afternoon,
    I am working on trying to program a cycle timer with ORCA... Trying to cycle pumps continuosly every 10 minutes during cold weather... 10 mins on and 10 mins off...
    I am not the Delta genius... I think I am close and can play around some more tomorrow... but wondering if any Delta pros can weigh in on this...

    For instance...
    IF OAT<45 THEN
    (PUMP = ON) AND (LOWTEMP = ON)
    END IF
    IF (PUMP = ON) ONFOR 10M
    (PUMP = OFF)
    END IF
    IF (LOWTEMP = ON) AND ((PUMP = OFF) OFFOR 10M) THEN
    (PUMP = ON)
    END IF
    IF (LOWTEMP = OFF)
    PUMP = OFF

  2. #2
    Join Date
    Dec 2014
    Location
    Vancouver, BC
    Posts
    52
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    The tricky thing with the OnFor and OffFor is that they should really be called "True For" and "False For"
    So if you write the following:
    If (BV1 = Off) OffFor 5M then
    BV2 = On
    EndIf
    That is a double negative, it will execute when BV1 has been ON for 5 minutes.

    Also, when commanding multiple things within one If statement, just write to them on the next line. Using the AND operator asks a question it doesn't write to the point.

    Here's what you are looking to do:

    //ENABLE/DISABLE LOW TEMPERATURE MODE
    If OAT < 45 Then
    LOWTEMP = On
    End If
    If OAT > 50 Then
    LOWTEMP = Off
    End If

    //CYCLE PUMP ON 10 MIN INTERVALS WHEN LOW TEMP MODE IS ACTIVE
    If (LOWTEMP = On) And (PUMP OffFor 10M) Then
    PUMP = On
    End If
    If PUMP OnFor 10M Then
    PUMP = Off
    End If

  3. #3
    Join Date
    Jan 2012
    Location
    Denver
    Posts
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    Thread Starter
    zzip7... Thanks for the reply. That worked perfect... Experience makes it look simple... I was way too complicated... Thanks again...

  4. #4
    Join Date
    Apr 2009
    Location
    chicago
    Posts
    102
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    LOWTEMP =SWITCH(OAT,45,50)
    IF LOWTEMP THEN
    DO EVERY 10M
    IF PUMP ON THEN PUMP OFF ELSE PUMP ON ENDIF
    ENDDO
    ENDIF
    IF OAT > 50 THEN STOP PUMP ENDIF

    7 lines, condensed, and almost readable,

  5. #5
    Join Date
    Apr 2009
    Location
    chicago
    Posts
    102
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    DO EVERY 10M PUMP = NOT(PUMP)*(OAT<45) ENDDO

    1 line, heh ,don't need differential,
    Last edited by WHO_IS_I_AM; 10-28-2018 at 09:58 PM.

  6. #6
    Join Date
    Dec 2014
    Location
    Vancouver, BC
    Posts
    52
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    Quote Originally Posted by WHO_IS_I_AM View Post
    DO EVERY 10M PUMP = NOT(PUMP)*(OAT<45) ENDDO

    1 line, heh ,don't need differential,
    Nice... Although, I'm a big believer in longer code if it means it's easier for the service guy or the customer to read and understand it. The controllers have some much memory now that it's rarely that big of issue.

  7. #7
    Join Date
    Apr 2009
    Location
    chicago
    Posts
    102
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    Quote Originally Posted by zzip7 View Post
    Nice... Although, I'm a big believer in longer code if it means it's easier for the service guy or the customer to read and understand it. The controllers have some much memory now that it's rarely that big of issue.
    yea well its script, so if you want to write a book above the line of code, you can be as verbose as you wish, but longer the code usually the harder it is to understand, and more likely to err,

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