eWON General Reference Guide - Esco Drives & Automation
eWON General Reference Guide - Esco Drives & Automation
eWON General Reference Guide - Esco Drives & Automation
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<strong>General</strong> <strong>Reference</strong> <strong>Guide</strong>Monitoring Web Interface6.1.4 Historical windowA check box may also appear in the first column of the View I/O screen meaning that you can choose this Tag to view its historical trend. Itappears only if the historical logging has been enabled in the Tag description (see chapter “Tag Setup” on page 67).6.2 Historical Trending screenWarning: depending on the <strong>eWON</strong>'s version - c.f. table at the end of this manual.From the real time screen, users can select Tags (providing that the historical logging has been enabled for those Tags) by clicking on the relatedcheckbox and request a graph for these Tags by clicking on the Show Graph for selection link above the real time tabs. Up to 4 Tags can beselected at the same time to be plotted on the graph.Figure 112: <strong>eWON</strong> historical trend configuration - 1The user has then to select the correct time range for the Tag's selection and click on the Update graph link to obtain a historical trend. Thecommon axis checkbox allows visualizing all the Tag names on the same axis. If the scales are different, it is clearer to display each curve with itsown scale (by unchecking the Common Axis checkbox).Figure 113: <strong>eWON</strong> historical trend configuration - 2RG-001-0-EN ver 1.5 <strong>eWON</strong>® - 20/03/2009 - ©ACT'L sa Page 149
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