Data quality 65728. What's it means?

Ignition
1

I am getting a lot of data quality value of 65728. Is this good? What's it means?

Thanks.

2

This is the Good_Backfill data quality. It means you have backfilled data coming in from something. What kind of tags are you seeing this on?

3

This is from Kepware via OPC-UA with playback function enabled.

4

So yeah, you probably have back-fill enabled on the tag provider these tags are in, and when values arrive with timestamps earlier than the current timestamp the backfill quality is applied.

Sounds like everything is working as intended.

1 Like
5

That make total sense.

Thanks.

6

Don't forget to hit the Solution button to mark your question as solved.

7

Looking at this page, it tells me "good_backfill" code is 203.

Quality Codes and Overlays | Ignition User Manual

8

Yeah, but it's also 65728 in the older data quality stuff. I don't know why one or the other is being used in this case, but it's defined as:

    //This is a special type of value- we use a flag in the upper two bytes to indicate that it's a special
    //version of good. This makes it backwards compatible with old versions of Ignition that simply ignore the
    //highest 2 bytes.
    GOOD_BACKFILL(192 | 0x010000, 0, Good_Backfill);

192 | 0x010000 = 65728

1 Like