Write Tag
- Updated2025-04-08
- 1 minute(s) read
Specifies the value of the tag.
The data type of the tag must match the polymorphic instance of the VI.
- Transferring Data Using Tags

tag in
Reference to a tag on the server.
Use Open Tag or Query Tags to obtain this reference.
value
Data value of the tag. Wire a constant or control to this input of the same data type as the polymorphic instance.
time stamp
Date and time to associate with the data value.
If you leave time stamp unwired, the server assigns a date and time when it receives the value. NI recommends you do not use this input in most cases. Only use time stamp when the value is associated with a measurement or something that occurred at a specific time.
error in
Error conditions that occur before this VI runs. The VI responds to this input according to standard error behavior.tag out
Reference to a specific tag on SystemLink Server.
Use Open Tag or Query Tags to obtain this reference.