Specifications

3 Designing Controllers Using the Design Tool GUI
3-22
Normalizing Response Amplitudes
When you're using the Channel Grouping: All option, you might find that the variables
have very different scales, making it difficult to view them together. You can choose to
normalize the curves, so that each expands or contracts to fill the available plot area.
For example, the plot below shows two plant outputs together (Channel Grouping: All
option). The outputs have very different magnitudes. When plotted together, it's hard to
see much detail in the smaller response.
The plot below shows the normalized version, which displays each curve's variations
clearly.
The y-axis scale is no longer meaningful, however. If you want to know a normalized
signal's amplitude, use a data marker (see “Adding a Data Marker” on page 3-18).
Note that the two data markers on the plot below are at the same normalized y-axis
location, but correspond to very different amplitudes in the original (unnormalized)
coordinates.