If you select button, button of Analog Historical Trend screen menu button or select 'View Settings' of shortcut menu, dialog box is shown such as <Figure 1>.
<Figure 1> Example for Analog Trend Settings dialog box
You can select max/min value of graph at Trend Max/Min area of <Figure 1>, and possible to set the data read period between 1min and 60min.
Also, you can set graph display point(none, rectangle, circle, triangle, diamond, x, *), whether to use guide line, whether to display alarm value line(HiHi etc) and whether to display current value line at display option area, and possible to set start time of trend at trend start time area.
Trend Time Setting can be set by selecting button of analog trend screen or button of menu button.
You can increase or decrease the trend start time as 1hour ~ 30days(proportion to entire time of trend) intervals by selecting and button of analog trend screen or and button of menu button.
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