NOTE: Tags do not apply to Template expressions, instead you use Template Parameters.
There are several types of OPC tag that you can use in your expressions:
- Property Tags—represent the properties of database items
- Method Tags—represent the methods of database items
- Search Key Tags—represent custom search key database fields
- Server Status Property Tags—represent the server's status properties.
For more information, please refer to the section that describes the type of OPC tag you want to reference.