Software Upgrade Strategy and Licensing Requirements for Migrating PCS 7 V8.1 to V9.0

Upgrading SIMATIC PCS 7 from V8.1 to V9.0 SP3 across Engineering Stations, OS Servers, Clients, and Process Historian (IMS) is not a free update; it requires purchasing official Siemens Software Upgrade Packages (e.g., 'SIMATIC PCS 7 Engineering Upgrade Package V8.x to V9.0' and matching OS Server/Client upgrade packages) or possessing an active Software Update Service (SUS) contract. Furthermore, because V8.1 ran on Windows 7 and Server 2008, migration mandates deploying clean installations of Windows 10 Enterprise LTSC or Windows Server 2016/2019 on certified IPC hardware. Final license quantities and MLFBs must be validated with an authorized Siemens distributor quotation.

Executive Summary

Modernizing an enterprise automation infrastructure from SIMATIC PCS 7 V8.1 to V9.0 SP3 represents a strategic migration that touches every layer of the DCS architecture: controller firmware, field networks, engineering tools, runtime servers, and historical reporting engines (Process Historian/Information Server). Plant managers frequently ask whether major version upgrades can be downloaded freely from Siemens Industry Online Support (SIOS) and what procedure governs multi-station deployment. This guide details the commercial licensing rules, explains the role of the Software Update Service (SUS), outlines the station-by-station migration procedure, and establishes operational precautions.

Architectural and System Mechanics

PCS 7 Migration Architecture and Licensing Distinctions:

Major Release vs. Service Pack / Update:
Minor Updates (e.g., Update Collections): Free downloads for registered license holders.
Major Version Upgrades (e.g., V8.1 to V9.0): Commercial software releases requiring paid upgrade licenses.
Licensing Categories for Migration:
Engineering Station (ES): 'Upgrade Package OS/ES V8.x to V9.0'.
OS Servers: Dedicated Server Upgrade Packages. For redundant server pairs, Server 1 requires the OS Server Upgrade, and Server 2 requires the OS Server Redundancy Upgrade.
Process Objects: Existing AS RT PO and OS RT PO quantities remain valid but require version upgrade keys in Automation License Manager (ALM).
Process Historian (IMS) and Information Server: Require separate dedicated upgrade licenses.
Operating System Paradigm: Upgrading Windows in-place on existing PCS 7 installations is strictly unsupported. A clean OS deployment (Windows 10 Enterprise LTSC 2016/2019 or Windows Server 2016/2019) is mandatory.

Step-by-Step Engineering and Implementation Procedure

Step 1: Audit Installed Licenses and Hardware Baseline

On all V8.1 stations (ES, OS Servers, OS Clients, Process Historian), export the installed license list from Automation License Manager (ALM).
Record exact Process Object counts: AS RT PO, OS RT PO, and Archive tags.
Verify that physical PC hardware (SIMATIC IPCs) meets the hardware requirements for Windows 10 / Server 2016.

Step 2: Procure Migration Upgrade Packages

Procure the necessary upgrade packages from your authorized Siemens distributor:
- Engineering Upgrade Package V8.x to V9.0.
- OS Server and OS Client Upgrade Packages.
- Process Historian / Information Server Upgrade Packages.

[!NOTE]
Validate all final license quantities, MLFBs, and software delivery types (OSD download vs. physical USB) against an official distributor quotation.

Step 3: Archive and Reorganize the Multiproject

In SIMATIC Manager on the V8.1 ES, select 'File' -> 'Archive...'.
Select 'With reorganization (slow)' to clean database tables.
Store the archive on secure external media.

Step 4: Deploy Operating Systems and PCS 7 V9.0 SP3

Perform clean OS installations (Windows 10 Enterprise LTSC or Windows Server 2016/2019) on new or reformatted IPCs.
Install PCS 7 V9.0 SP3 from official media.
Transfer the upgraded license keys via ALM.

Step 5: Migrate Multiproject and Compile

Retrieve the archive in SIMATIC Manager V9.0; confirm database conversion.
Update the Master Data Library with APL V9.0 blocks.
Execute 'Update Block Types' in CFC.
Migrate WinCC projects via Project Migrator and run the OS Project Editor.
Execute full AS and OS compilations.

Verification

To verify migrated system health:
1. In ALM on all stations, run 'Check License Keys'; verify 0 license deficits or expiration warnings.
2. Verify communication between ES and AS controllers in NetPro.
3. Start WinCC Runtime on OS Servers and Clients; confirm active process data communication and alarm logging.
4. Verify that Process Historian connects and archives long-term data without database errors.

Limitations and Operational Precautions

Operational precautions:
- Upgrading from V8.1 to V9.0 cannot be performed online in RUN; a scheduled plant maintenance shutdown is required to download upgraded block types to AS controllers.
- Never discard V8.1 system image backups until the V9.0 facility has completed full site acceptance testing (SAT).
- Controllers running firmware older than certified minimums must have firmware updated prior to project download.

Engineer FAQ

Q: Can PCS 7 V9.0 SP3 be downloaded for free to upgrade V8.1?

A: No. Major version upgrades require commercial license upgrade packages. Only minor hotfixes and updates are free downloads.

Q: What is the Software Update Service (SUS)?

A: SUS is an annual maintenance contract with Siemens that automatically delivers new software versions and upgrade licenses upon release.

Q: Can I upgrade Windows 7 to Windows 10 without reinstalling PCS 7?

A: No. In-place Windows upgrades over existing PCS 7 installations are strictly unsupported and corrupt engineering databases.

Q: Do redundant OS servers require two full upgrade packages?

A: Server 1 requires a standard OS Server Upgrade package; Server 2 requires an OS Server Redundancy Upgrade package.

Q: Where can I find the official migration manual?

A: Siemens publishes the manual SIMATIC Process Control System PCS 7 Software Update with Utilization of New Functions on SIOS.

Technical References

Related Tags

PCS 7 Migration, V8.1 to V9.0, Software Upgrade, ALM Licenses, Process Historian

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Software Upgrade Strategy and Licensing Requirements for Migrating PCS 7 V8.1 to V9.0