Problem with create function with more than 3 inputs.

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This topic contains 3 replies, has 2 voices, and was last updated by Mikhail Mikhail 2 months ago.

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  • #5446
    Avatar
    gasin
    Participant

    I’m stuck to create formula with 3 input parameter in function.

    public compare(double in1, double in2, double in3)
    {
    double output = 0;
    if(in1==1 && in2==1)
    {
    in3 = 1;
    return in3;
    }
    else{return output;}
    }

    and i create input 1003 using formula with : compare(Val(1001),Val(1002),Val(1003))

    with this code i got error on web. but if i put only 2 input in function, web will work fine.

    so, is it possible to put 3 inputs variable in to function?

    #5448
    Mikhail
    Mikhail
    Moderator

    is it possible to put 3 inputs variable in to function?

    Sure, it’s possible.
    Function must have a return type: public double compare(…)
    You can find error description in SCADA-Server log.

    #5450
    Avatar
    gasin
    Participant

    here is error from server.

    2019-05-14 20:02:34 <DESKTOP-1CTUDRI><SYSTEM><ERR> Error compiling the source code of the formulas
    Line 742, column 58; error cs1501: No overload for method ‘if2’ takes 2 arguments
    See the file c:\SCADA\ScadaServer\Log\CalcEngine.cs with the source code
    2019-05-14 20:02:34 <DESKTOP-1CTUDRI><SYSTEM><ERR> Normal program execution is impossible

    i’m create function “if2” with 3 inputs and got this error.

    and here is my function.

    public if2(double in1,double in2,double in3)
    {
    if(in1==0 && in2==1)
    {in3=1;}
    if(in2==0)
    {in3=0}
    return in3;
    }

    in1 & in2 are input parameter from register via modbus and in3 is extra input that i create to database to get result from this function.

    how can i solve it, please suggest.

    #5456
    Mikhail
    Mikhail
    Moderator

    At least
    public double if2(double in1,double in2,double in3)

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