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Diagnostics

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Last updated 2 years ago

Diagnostic variables are available for device operation diagnostics. They are represented as OPC UA items and described below.

Only diagnostic variables that are common for all types of devices are described here

  • GoodResponses (cyclic driver only): contains the total number of successful responses from the data source.

  • LastGoodResponseUtcTime (cyclic driver only): contains the time of the last successful response from the data source in the UTC format.

  • BadResponses (cyclic driver only): contains the total number of unsuccessful or unreceived (during loss of connection) responses from the data source.

  • LastBadResponseUtcTime (cyclic driver only): contains the time of the last unsuccessful or unreceived response from the data source in the UTC format.

  • CommunicationEstablished: contains that communication channel between the device and the data source has been established (True or False).

  • CommunicationLost: inverted value of _CommunicationEstablished.

  • DemoIsExpired: contains that demonstration period for the device is expired.

  • MaxPollingDuration (cyclic driver only): contains the longest reading time for a group of blocks in the device.

  • MaxScanDuration (event-oriented driver only): specifies the maximum time (in milliseconds) it takes to parse data when listening to the channel.

The values of the diagnostic variables can be overwritten by the user. This requires that the user has the rights to write diagnostic parameters. Read more about this .

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