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ankur_gajjar

Real time trend plotting in WIncc Flexible 2008

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Dear all, I have implemented PID temperature control for mini heating tank system using Siemens S7-313-c2-DP PLC. Now, I want to plot the values of the "process value (temperature) " and "Setpoint" as a function of time in wincc flexible runtime. I am using wincc flexible 2008 advance SP3. However, the problem is that I have tried plotting the value of "process value" as a function of time using trendview, But the change in the value is not smooth i.e. it is in step manner. Besides, the value of temperature progresses towards the left side of the graph, but I want it in the right side. And also I would like to plot two values against time in one graph in smooth transition so that I can make the comparison and I want the plotting only on the right side of graph. So, how to do all these things? Since, I am a newbie to WinCC, I would appreciate your help. Thank you. Regards, Ankur Gajjar

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