Geo SCADA and ClearSCADA Version Compatibility Matrix

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This page provides information on version compatibility between clients and servers, as well as between servers for redundancy purposes.  Use this information during the upgrade process to determine the appropriate upgrade path for your system.

For information on client-server and server-server compatibility for older versions, please select from the following pages:

• ClearSCADA Version Compatibility Matrix (2005R0 - 2010R1)
• ClearSCADA Version Compatibility Matrix (2010R1 - 2014R1)

Client - Server Compatibility

The following table shows ViewX client to server compatibility between different revisions of Geo SCADA Expert/ClearSCADA. This includes major and minor releases.

In all cases, you should follow the upgrade instructions for the version to which you are upgrading.

	2015 R2 Client	2017 Client	2017 R2 Client	2017 R3 Client	2019 Client	2020 Client	2021 Client	2022 Client	2023 Client
2015 R2 Server	✅	✅	✅	✅	✅	❓	❓	❓	❓
2017 Server	✅	✅	✅	✅	✅	❓	❓	❓	❓
2017 R2 Server	✅	✅	✅	✅	✅	✅	❓	❓	❓
2017 R3 Server	✅	✅	✅	✅	✅	✅	✅	❓	❓
2019 Server	❓	✅	✅	✅	✅	✅	✅	✅	❓
2020 Server	❓	❓	✅	✅	✅	✅	✅	✅	✅
2021 Server	❓	❓	❓	✅	✅	✅	✅	✅	✅
2022 Server	❓	❓	❓	❓	✅	✅	✅	✅	✅
2023 Server	❓	❓	❓	❓	❓	✅	✅	✅	✅

For cases marked by a ❓, these configurations are not verified during the testing of the release. We recommend either a staged step-by-step upgrade or thorough testing in an offline environment.

When upgrading a system with separate clients and servers, the recommended strategy is to upgrade the clients before the servers. If you must upgrade the servers first, we recommend using Server Emulation on the servers to ensure client compatibility during the upgrade process. If you do not use Server Emulation to advise clients of the server's object versions to save, then it will be possible for later version clients to save mimics and other objects which are then not compatible with the older clients communicating to that server. See detailed upgrade instructions for your version.

Server - Server Redundancy Compatibility

The following table shows server to server compatibility between different revisions of Geo SCADA Expert/ClearSCADA. This includes major and minor versions as well as service packs.

	2015 R2 Sby	2017 Stby	2017 R2 Stby	2017 R3 Stby	2019 Stby	2020 Stby	2021 Stby	2022 Stby	2023 Stby
2015 R2 Main	✅	✅	✅	✅	❓	❓	❓	❓	❓
2017 Main	❌	✅	✅	✅	✅	❓	❓	❓	❓
2017 R2 Main	❌	❌	✅	✅	✅	✅	❓	❓	❓
2017 R3 Main	❌	❌	❌	✅	✅	✅	✅	❓	❓
2019 Main	❌	❌	❌	❌	✅	✅	✅	✅	❓
2020 Main	❌	❌	❌	❌	❌	✅	✅	✅	✅
2021 Main	❌	❌	❌	❌	❌	[1]	✅	✅	✅
2022 Main	❌	❌	❌	❌	❌	[1]	[1]	✅	✅
2023 Main	❌	❌	❌	❌	❌	[1]	[1]	✅	✅

For cases marked by a ❓, these configurations are not verified during the testing of the release. We recommend either a staged step-by-step upgrade or thorough testing in an offline environment.

[1] - Database will synchronize each way only if the Main server is in Emulation Mode. See the product help or the Release Notes of Geo SCADA 2021 for a description of this feature.

Running a Mixed Server Version System

Running a system with mixed version servers is only recommended during the upgrade procedure. It is not advisable to run in a mixed version server environment for any longer than necessary.

There are various limitations to a system running a mixed version server environment. Clients connected to an upgraded standby server cannot:

• Perform control operations such as Hand Controls/Overrides etc.
• Accept/Remove/enter Alarm Responses
• Insert/Delete/Modify Trend annotations or data
• Insert/Delete/Modify Notes
• Execute logic or script programs that perform write operations on database objects (eg. SetValue function in Client side scripts)
• Set/Change Security or Color Palette settings
• Create/Import/Delete/Rename objects into the database
• Enable/Disable alarms
• Edit or save objects in the database
• Convert objects from one type to another

If a user attempts any of these operations whilst connected to the standby server, the following message will be displayed:

Error attempting to: <Description of operation>

You attempted a write operation from a client connected to a Standby server, and the Standby server is running a different version of software to the Main server.

Write operations to standby servers running a different version of software to the main server are not supported.

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More Links:

   ClearSCADA Version Compatibility Matrix (2010R1 - 2014R1)
   ClearSCADA Version Compatibility Matrix (2005R0 - 2010R1)