Inherent nature of access to item
AccessRights represents the server's
ability to access a single OPC data item. The property value can be
you can read the server item's value. If
you can write values to the server item. If
you can read and change the server item's value. If you attempt a
read or write operation on an item that does not have the required
access rights, the server may return an error.
The value is set by the server when an item is created.