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About leen

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  1. Hi, In a control loop I am using a proportional valve with an input -10V to +10V. With that input the process can be move left and right. When it has to be go to the right the input has to be positive, depend on the distance between 0 and +10V. When it has to be go to the left, the input has to be negative between 0 and -10VDC. Therefor I am using a output -10VDC to +10VDC. Now I will use a PID loop for it. Only what I find is a positive or negative PID control, so it can just 1 side on. You can switch this between cool and heat. But I wil not use that switch cool/heat, but just depend on the process value send the control value to negative or positive. Can somebody help me to explain how to handle with this. Thanks al for any help
  2. Hi, I read in an input. Every second the value of the input ( 0 or 1) stored in an array. After 1 minute I have 60 values into the array list. Then I want to calculate the average value of all values to know how many times the input is high into 1 minute. But there is no function to get direct the result, only i.e. to get the minimum or maximum value. To calculate on a way by 1 to 1 it's very long-winded. Is there a function what I can use or a simply way to fixe this. Best regards Leen
  3. Hello, I want to get a table where I put in parameter settings. On the first colum I put in the name of parameter. On the second the value of the parameter is read. Now I will not have the possibility that the name of the parameters are changed. So colum 1 read only. At colum 2 I will have the possibility to change the settings. But on the table only both colums are ready only or editable. Can somebody help me how to read out a parameterlist on the way I wanted? Thanks Leen
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