
9.5.13 Gauge
The gauge component emulates a mechanical gauge, with a needle whose axis
is in the center of the gauge. The range of values displayed by the gauge is user-
defined. The gauge has major (large, numbered) and minor (small, unnumbered)
tick marks. You can define the number and spacing of these tick marks. You can
also define different colors to denote different ranges of values on the gauge
component. The colors green (okay), yellow (warning), and red (fault) are
available. You can optionally define one green and up to two yellow and two red
ranges of values that appear on the gauge scale. The value of the parameter on
the scale of the gauge is pointed to by the needle. The value of the parameter
also appears in a small digital display in the lower center of the gauge. The units
of the parameter measurement appear in the lower right hand corner of the
gauge, and the user-defined title is at the top of the gauge display. The gauge
components are square in aspect ratio (take the same number of grids in height
as they do in width). An example of a gauge component is shown below.
Figure 43 – Gauge Component Example
Gauge components for many parameters have an LED appearing at the bottom
center of the component. The color of the LED will reflect the color of the range
of values (red, yellow, or green) to which the needle is pointing.
Min / Max markers may be added to a gauge by clicking on a check box in the
Component Editor. These marks are associated with the gauge itself. That
means that if two gauges are displaying the same data, each will maintain its
own values for the min max marks, and they can be reset independently.
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