Online Upgrade from Plant SCADA 2023

Before you proceed with an online upgrade, review the topic Prepare your System for Upgrade to check if a computer is ready to install a new version of Plant SCADA.

Note: The deployment architecture for Plant SCADA 2023 and 2023 R2 is not compatible with deployment servers running an earlier version. If you have a distributed system that includes some computers on Plant SCADA 2020 R2 (or earlier), you should retain your existing deployment server to distribute projects to these computers until the roll out of 2023 R2 is complete. For more information, see Upgrade Deployment from Plant SCADA 2020 R2.

To perform an online upgrade from Plant SCADA 2023:

1. Check that you have added the following parameter in the .INI file to all your server nodes before you start the online upgrade.

   [LAN]EarliestLegacyVersion = 8400.

   Restart the servers after adding the parameter for the changes to take effect.

2. Shutdown SCADA runtime on the primary server.

3. Upgrade Plant SCADA on this server according to the procedure described in Offline Upgrade.

   Note: Do not uninstall Platform Common Services (PCS) if upgrading from Plant SCADA 2023.

   • Set up the Server Password in Configurator's Computer Setup page. See Use Configurator to Set Up a Runtime Server.

   • Configure your System Management Server and encryption settings based on your requirements.

     Note: The encryption settings in version 2023 R2 need to be configured to align with the settings as they were in 2023, otherwise communications may not be successful.

     The following table indicates the encryption settings that will align successfully across version 2023 R2 and 2023.

     		Encryption setting on Plant SCADA 2023 R2
     		Unencrypted	Mixed Mode	Encrypted
     Encryption setting on 2023	Unencrypted	Communication OK	Communication OK	Communication unsuccessful
     	Mixed Mode	Communication OK	Communication OK	Communication OK
     	Encrypted	Communication unsuccessful	Communication OK	Communication OK

4. Place the backed-up alarm database in the [CtEdit]Data directory. This will allow a quicker synchronization of alarm servers.

5. Restart the primary server, which is now upgraded.

6. The upgraded server will synchronize its alarm database with the running v2023 server. You need to wait for the synchronization process to finish, and this will depend on the size of your alarm database. The synchronization information is available from the main kernel window of the Alarm Process as well as the syslog.

7. Upgrade your client nodes one by one.

8. Configure your System Management Server and encryption settings based on your requirements.

9. Check the Server Authentication section of the Computer Setup page in Configurator, under Plant SCADA. If you have selected Configure Server Password, make sure you use the same password as the one defined above in step 5.

10. Shutdown runtime on the standby server.

11. When the newly upgraded server assumes the primary server role it will migrate the entire alarm database to the new format, and you should now be able to see Alarm Summary data on all migrated clients.

12. Upgrade Plant SCADA on this server according to the Offline Upgrade.

    • Set up the Server Password in the Configurator's Plant SCADA | Computer Setup page.

    • Configure your System Management Server and encryption settings based on your requirements.

13. Restart the standby server, which is now upgraded.

14. Check functionality of the system as a whole.

15. Test redundancy by switching off the primary server and checking that the standby takes over and clients switch over.

See Also

Troubleshooting an Online Upgrade