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  1. IO-Link modules
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  3. Digital input filters

Digital input filters

Available on Standard Line modules.

The input signals can be changed via different filters before they are passed on via IO-Link. The following filters are available and are applied to the input signal in this order:

  1. Input pin
  2. Debouncing filter
  3. Hold function
  4. Invert function
  5. Process-data input

Each of these filters can be configured separately via IO-Link.

Debouncing filter

  • The unit detects signals of a length of at least 1.5 ms. Shorter signals are not detected
  • The input debouncing filter suppresses noise signals caused by mechanical switches. The filter provides the input signals at the filter output with a delay (debouncing time). All signals shorter than the set debouncing time are ignored by the filter.

Hold function

  • This filter prolongs short input pulses. Via the following parameters the filter is configured
  • Holding time: Pulse duration to which the short pulses are to be prolonged
  • Pulses applied for a longer time than the holding time are not prolonged
  • Holding status: Input level to be prolonged (HIGH or LOW)

Invert function

  • This function inverts the logic of the incoming signal