Allen-Bradley LOGIX 5000 Reference Manual page 329

Controllers advanced process control and drives and equipment phase and sequence instructions

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This example is the minimal legal programming of the HPF function block and is

only used to show the neutral text and generated code for this instruction. This is

for internal purposes only and is not a testable case.

1st order filter

2nd order filter

3rd order filter

Function Block

Structured Text

HPF_01.In := Velocity_Feedback;

HPF_01.WLead := Cutoff_frequency;

HPF_01.Order := 2;

HPF(HPF_01);

filtered_velocity_output := HPF_01.Out

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