Super Systems XGA Viewer - Manual (Page 26)

XGA Viewer Operations Manual
Super Systems Inc. Page 26 of 46
Figure 29 - "Edit Trend" window - Data tab
Advanced Tab:
The “Expression” will be an algebraic expression that can be used to translate the data. Use an
“x” to represent the data in the equation. For example, to subtract 100 from the values, use the
following expression: “x – 100”. With this example, a value of 1700 °F will be displayed as 1600
°F.
The “Special Values” will display the specified values (“Message”) when the current value
(“Data”) is present. A common use for the special values is when the value reaches 0. The
“Data” would be 0, and the “Message” would be “----”, which means that whenever that trend
had a value of 0, the trend’s display on the left of the screen would display a line of dashes. The
“Message” field can contain either numbers or text.