Historical Trend Scaling

Historical Trend Scaling

Dear All, I am having PLC variables with different limits. I configured Historian and Created a trend with a standard template. When I am adding the variable at run time, I am facing the problem for scaling because of different limits. For Example, I added flow1 (Limit 0-100) , Flow2 (Limit 0-200) variables and selected the Y-axis for Flow1. Scaling will be default range of variables. Now the trend is showing 50% value of Flow2 with respect to Y=Axis due to the range of Flow1. Comparison of different flow variables with single trend is not possible until if we set the scale for all variables. But If I like to compare 8 flow values then I want to know the min and max limit of all 8 variables, then i want to set scale. For simplification, Can we able to achieve any one of the following task in Extended trend..? 1. Is it possible set the fixed scale for trend...? For example, I fixed the scale as 0 to 200, If I add any variables at run time then the scale will be 0 to 200 for all variables. 2. I added a variable permanently and I clicked Y-axis, Now If I add the variable at run time, Is it possible to achieve the scaling of permanent variable..? Best Regards, A.Navaneet.

This is a migrated post! Originally posted on 05.10.2013 by user navaneet. Please be aware that information can be outdated.

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