User guide

eWON 500-2001-4001-4002 User Guide - Monitoring Web Interface
eWON 500®2001®4001®4002® Version 4_3_0 - User Guide - 10/5/05 - ©ACT'L sa - Page 113
7.1.3 Real time graph
If a real time recording is enabled for a Tag, a small icon will appear next to its name:
This small icon is an hyperlink to show the graph picture. When the link is clicked, another window will open and after a small delay
(about 3 seconds), a graph will be displayed:
This graph displays the whole real time window logged. It is possible with user defined web pages to limit the display range of the graph
(please refer to chapter “User defined Web Site” on page 179).
Important: If the main explorer window hides the real time window, clicking again on the real time graph hyperlink will not bring it
forward. You should bring it forward manually.
7.1.4 Historical window
A check box may also appear in the first column of the View I/O screen meaning that you can choose this Tag to view the historical trend.
It appears only if the historical logging has been enabled in the Tag description (see chapter “Tag Setup” on page 56).
7.2 Historical Trending screen
Warning: depending on eWON's version - c.f. table at the end of this manual.
From the real-time screen, users can select Tags (providing that historical logging has been enabled for those Tags) by clicking on the related
checkbox 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 be selected at the same time to be plotted on the graph.
Figure 67: eWON historical trend configuration - 1