Comparison with Hysteresis

Lib.Mervis.v1_0.Hysteresis

• Lib.Mervis

A helper block used for comparing two values with hysteresis between transitions.

program test
    var
        hyst: lib.mervis.v1_0.Hysteresis;
    end_var

    hyst(Input := ..., SetPoint := ..., Hysteresis := 5);
end_program

The block compares two variables - Input and SetPoint. The output is set as follows:

• True - if Input rises above SetPoint + Hysteresis
• False - if Input falls below SetPoint