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Operating Instructions
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8.5.6 Process data Status
Each port (IO-Link Device/Master) has a value status (PortQualifier). The value status indicates whether the process
data is valid = VALID or invalid = INVALID.
With regard to the process input data, the measuring system also sends the process data status to the IO -Link master
in each cycle of the process data. This status is evaluated by the IO-Link master and marks the process data
accordingly.