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"HMI application overload" on an application with Trends


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Hi All,

I am new to Unictronics and have written an application PLC + HMI with 10 Screens. 

During test a trend is started,  2 feeds, datasampling (SD card) Sometimes the error HMI application overload popups.  

Found in the system tags the execution tags, and one is the Pusage tag. It keeps at >90% and sometimes even 100%,  Even without VNC/ Webserver or the trend is running

Is the overload error  related to this?

Is this normal an is there a way to reduce panel usage? For example in Siemens you can set the tage update rate.   

Thanks in advance! 

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