The BEMS (Building Energy Management System) is sold as an option to a WebAccess HMI & SCADA software package.
BEMS uses an additional Hardkey and license file that is installed on the Project Node. It does not use the same hardkey as WebAccess HMI & SCADA software (which goes on the SCADA node).
If the Project Node SCADA node are the same PC, then there will be two hardkeys on the Node.