Hello, stale and Bad Points, as I interpret them. What would they be in my system? I did not understand well. I looked for them and found about 600 on my system. What should I do with them? Thank you in advance.#stale and Bad Points.Demis.
Hello Demis! The following are definitions for stale and bad points taken from the live library:
The Stale state indicates that the PI point has not updated within a specified time. By default, a tag is stale if the current value is over four hours in the past.
The Bad state indicates that the current value of a PI point is a digital state from the system digital state set in the archive. These values are inserted into the current value when an error condition occurs. For example, a state of I/O Timeout is a common symptom when a PI interface determines it has lost contact with the device it is configured to read.
There are several reasons for theses to occur, the following is an inexhaustive, yet common list:
Interface is shut down,
The Data archive is receiving bad quality data
Your data source updates infrequently,
This point is not being written to anymore
What you should do with them depends on the reason for them being stale/bad. Firstly, I would validate why these points are stale/bad, and whether or not they should be updating. You may want to have a look at the following article for Bad Quality Data in the PI System. If at any time you need help to fix an issue with bad/stale points that should be updating please reach out to technical support either by creating a case in your online portal, or by reaching out to us by phone using +1.510.297.5800.
Jeffrey, Thank you so much...
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