About isValid status check

When linking an input-type slot of a writable point or kitControl object, the value received at the input is processed (evaluated) by that point or object, if it is valid.

Note: A valid input is one with none of the following status flags set:

  • down

  • fault

  • disabled

  • null

  • stale

If any of the above status bits are set at an input, that input value is not used.

  • If a kitControl object with a single input, by default that object uses the last known valid received (at least until the input becomes valid again).

  • If a kitControl object with a multiple inputs, only the valid inputs are evaluated.

  • If a writable point, the priority scan continues.