Watlow ANAWIN 2 - Manual (Page 83)

Using the Trend Plot Screen
AnaWin User’s Guide 7-21
Number of Data Sets Displayed
Use the Number of Data Sets Displayed field to define the number of
data sets that appear on the plot. Once you enter a number in this field,
the defaults for those data sets appear in the pull-down list boxes below
the Data Set to View field. To plot data other than the defaults, configure
each data set individually, as described below.
Data Set to View
Use the Data Set to View field and the associated list boxes to configure
each of the data sets. For each data set specify a controller, a channel,
and a variable to plot: Process Variable (PV), Setpoint (SP), Output 1
Percent (OV1), or Output 2 Percent (OV2).
Graphing Limits
Use the graphing limits parameters, shown in Figure 7-16, to set the
high and low graph limits for the trend plot. These limits provide a
window through which to view the plot. Set the limits with all the plot
variables in mind. If data is outside the high or low graph limits, it will
not be visible on the screen, although you can use the Scale button to
automatically scale the vertical axis when viewing the plot.
FIGURE 7-16 Graphing Limits Parameters
Time Range
Use the time range parameters, shown in Figure 7-17, to set a beginning
and end time frame for trend plotting. All references are in 24-hour
time.
FIGURE 7-17 Time Range Parameters
Trend Plot Storage
Select Trend Plot Storage to display the Data Storage settings screen,
shown in Figure 7-18. This screen provides information and parameters
related to storing plot data files.