I tried searching the docs/forum but couldnt find it.
Whats the functional difference between a “text” datatype versus a string? When would you choose one over the other?
Basically none. I would use String preferentially, but they should act the same in a way that’s transparent.
is there any limit on length for either?
Both will be backed by Java’s String class in memory, which limits to 2,147,483,647 “characters”, if I remember correctly. Given that would be a ~2 gB file, it’s extremely unlikely to be an issue. You’re much more likely to run into practical limits sending extremely large strings ‘over the wire’ (to/from PLCs, to/from gateway/sessions/clients) or into databases before you run into any actual limit in Ignition’s datatypes.
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oh wow, awesome thanks!
If you’re using a memory tag then there actually is some limitation on the size.
The entire tag configuration is stored as a JSON string that is limited to 268,435,455 bytes (0x0FFFFFFFF). A very large String value could push it over that limit.
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