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At the very bottom of the form, there are three buttons:
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
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Reset Plot: Click to clear the diagram of all simulated process values.
Save: close the model identification session, saving the results (i.e. model structure,
parameter values and the numerical values quantifying the model fit)
Close: close the model identification session, without saving the results
5.3.2 Model Response Tab
The Model Response tab allows the user to assess additional model characteristics. After having
completed a model identification step the user may assess two different Model Evaluation Plots by
clicking on the Model Response tab.
Figure 76 - Main Evaluation Screen – Time domain shows the main Evaluation screen in case “Step
Response Plot” is selected. This diagram shows the PV behavior in case CO performs a unit step.
Figure 76 - Main Evaluation Screen – Time domain
Through the drop-down box to the user may select Bode Plot option. This consists of two charts:
 Amplitude (top diagram): Shows the amplitude gain for the transfer function from the model
input (control output) to the process value, plotted against frequency.
Document Title

cpmPlus
Loop Performance Manager
User Manual
ABB. All rights reserved
Doc no
3BJTCC497LDC750
Rev
Pages
3.3
F
Page 98 of 299