Simulation Signals

There is a wide range of simulation signals offered. You can select from them in the Type group of radio boxes.

Read Count is incremented by one every time when the item is read (Write Count increments when the item is written). Random generates random value within the Amplitude range starting with Position. Ramp, Sine, Square, Triangle and Step are periodical signals. Their time behavior is influenced by Period and Phase parameters. Period specifies the signal frequency, while Phase moves the signal origin on the time axis.

Square and Triangle signal types have one more parameter: Ratio. Ratio defines Triangle signal steepness, or Square signal H/L proportions. # of steps parameter of the Step signal defines a number of steps that signal amplitude will be divided into.

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Figure: Dialog view to define a simulation signal for an OPC item.