Configure Input Filter time
⟩
⟩
⟩ Configure Input Filter Time

Configure Input Filter time

Filtering is used to eliminate high frequency oscillations or spikes from input or output signals. By removing the high frequency noise, the application can more accurately operate on the variation of the input or output. A pair of
Off -> On
and
On -> Off
filters work for a group of 8 input points.
To configure input filter time
  1. On the tab for the device, select
    Configuration
    .
  2. In the
    Configuration
    view, for each input point group, select an
    Off -> On
     and an
    On -> Off
     delay time in milliseconds:
    Device
    Off -> On Values
    On -> Off Values
    1756-IA16, 1756-IA16I, 1756-IM16I, 1756-IN16, 1756-IA32
    1 ms, 2 ms
    9 ms, 18 ms
    1756-IB16, 1756-IB16I, 1756-IC16, 1756-IG16, 1756-IH16I, 1756-IV16, 1756-IB32, 1756-IV32
    0 ms, 1 ms, 2 ms
    0 ms, 1 ms, 2 ms, 9 ms, 18 ms
    IMPORTANT:
    The input must remain at its new state continuously for at least the duration of the filter setting.
    For example, if the delay is set at 2 ms for
    Off -> On
    , and the input is OFF, the input must remain ON for at least 2 ms for the ON state to be recognized and reported by the device in the data. If the input comes ON for 1.8 ms and then goes OFF, the input device does not recognize an ON state and continues to report OFF.
    The filter times do not reflect delays due to the input circuit hardware, customer switching device, or customer supply voltage.
  3. Select
    OK
     to save the changes.
Provide Feedback
Have questions or feedback about this documentation? Please submit your feedback here.
Normal