Allocating AVEVA™ Enterprise Licenses

After you have activated licenses on an AVEVA Enterprise License Server for your Plant SCADA servers, clients and standalone HMI systems, you need to allocate them to the appropriate computers in your SCADA system.

When Plant SCADA runtime starts, it will request a license from the AVEVA Enterprise License Server that it is connected to. The type of license will be determined by the role configured for the computer in Plant SCADA's Computer Setup Wizard.

For example, Plant SCADA servers will request a server license, control clients will request a control client license and view-only clients will request a view-only client license. Plant SCADA Access Anywhere clients or remote desktop clients will also automatically retrieve a license directly from the AVEVA Enterprise License Server.

However, there are circumstances where you may need to reserve a license for a specific computer using the device reservation feature.

• Critical runtime computers

  For any computers in your SCADA system that support critical runtime functionality (for example, an I/O server or an alarm server), it is recommended you reserve the required license and download it directly on to the computer using the Checkout feature.

  Note: If you are using device reservations with a computer that hosts an Industrial Graphics Server, a Plant SCADA Access Anywhere client or an RDS client, you also need to use the Checkout feature. Be aware, however, that you should shut down runtime before you remove a checkout for a computer.

• Specific license types

  If your servers, control clients and view only clients have the same point count, you will not need to allocate specific licenses to each computer.

  However, if you have purchased licenses with different point counts, or any licenses similar to the following, you will need to allocate them to the relevant computers using Enterprise Licensing's device reservation feature.

  • Plant SCADA Control Client 250 Pack

  • Plant SCADA View-Only Client 250 Pack

  • Plant SCADA Driver, PowerConnect

  • Plant SCADA Driver, KNX

  • Plant SCADA Driver, BACnet

  • Plant SCADA Driver, S7TCP

  • Plant SCADA Driver, PSDirect MPI

  • Plant SCADA Driver, PSDirect ETH

  • Plant SCADA Driver, IEC60870.

    This will avoid a license with a specific point count or support for a specific driver being automatically retrieved by a computer that does not require it.

For more information, see Reserving Licenses in the AVEVA Enterprise Licensing documentation in AVEVA™ Help.

If you need to access a license that has been allocated to a computer that is currently inaccessible, you can use a "drop device" operation in AVEVA License Manager to release licenses. For more information, see Dropping Devices in the AVEVA Enterprise Licensing documentation.