The Standard Group is the most flexible group. It is commonly used as a bi-directional sync between your PLCs and databases. In addition to this, it can also be used to push data in either direction. This means the Standard Group can be used to store historical data, add to/update existing tables, create recipe management tools, and more.
The Historical Group is the most straightforward and simplest to use. It will take OPC data and store it as history in a database.
The Block Group is used to efficiently store large amounts of data in blocks or chunks of similar data in the database. This is very useful if you have many devices with the same tags in them.
Stored Procedure Group
The Stored Procedure Group is used in a similar way as the Historical Group except instead of selecting a target table, you select a target Stored Procedure and use the Tags as inputs and outputs. The only major requirement that makes this group different is that a stored procedure must already exist in your database for this group to work.