Convert Tag Type in Version 8.0

Ignition
1

Quick question - Is there a way in Version 8 to convert an existing tag type? I see a way to do this in version 7.9 documentation but the option is not visible in the version 8.0 designer we’re using.

I’d like to change a tag from OPC to expression. The most important thing for me is to not lose historical data already tied to this tag - if I just open a new tag and rename I’m afraid I’ll lose easy access to this data. Can anyone provide any suggestions about how to proceed here? Thanks!

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To change the type of tag you change the Value Source property of the tag.
I cant answer how it affects history data. My suggestion is to create a dummy-tag and test.

1 Like
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Thank you! For what it’s worth it DOES look like historical information is preserved when changing tag type, so transitioning the tag was very easy!