Siemens S7-1200 G1 Discontinuation: What It Means and How to Prepare
- Process Group
- May 29
- 3 min read
Siemens has officially confirmed that the SIMATIC S7-1200 G1 PLC range will be phased out from 1 November 2026, marking a significant milestone in the lifecycle of one of the most widely used automation platforms.
For many businesses, the S7-1200 G1 has been a reliable foundation for machine control and industrial automation. However, as with all PLC systems, lifecycle progression means it is important to start planning for what comes next.
Key Dates You Need to Know
Understanding the timeline is critical when managing PLC obsolescence and planning upgrades.
1 November 2026 – Official phase-out begins
31 October 2027 – Final availability of new units
Long-term spare parts support – Expected to continue for several years beyond
This phased approach gives organisations time to manage risk, maintain operations, and transition at their own pace.
Where the S7-1200 G1 Is Commonly Used
The S7-1200 G1 has been widely adopted across a range of industries and applications, including:
Machine control systems
Packaging and processing equipment
Conveyor systems
Assembly lines and small-to-mid automation setups
Because of its flexibility and reliability, many facilities still rely on these systems as part of critical operations.
Why Siemens Is Phasing It Out
The discontinuation of the S7-1200 G1 reflects a broader shift in industrial automation.
Siemens is transitioning towards the S7-1200 G2 platform, which is designed to meet the demands of modern industry, including:
Improved processing performance and scalability
Enhanced motion control capabilities
Greater data transparency for digitalisation
Alignment with current cybersecurity standards
This evolution is part of a wider move towards more connected, secure, and data-driven automation environments.
What the S7-1200 Discontinuation Means for Your Business
While the phase-out does not mean immediate disruption, it does highlight the importance of forward planning.
Key considerations include:
1. Installed Base Visibility
Understanding where S7-1200 G1 systems are currently in use is the first step in managing risk.
2. Spare Parts Strategy
Although spare parts will be available for years, availability, lead times, and costs can change over time as products move through lifecycle stages.
3. Future Projects
Continuing to build new systems using legacy PLC hardware can increase long-term maintenance challenges and costs.
4. Migration Planning
A phased approach to upgrading or replacing systems can help avoid unplanned downtime and spread investment over time.
Managing PLC Obsolescence Effectively
PLC obsolescence is a normal part of automation lifecycle management, but it requires a proactive approach.
Organisations that typically manage these transitions successfully:
Monitor manufacturer lifecycle announcements
Plan upgrades before critical points
Maintain access to spares and repair options
Take a structured, phased approach to modernisation
By contrast, delaying decisions can lead to increased costs, extended downtime, and supply chain challenges.
Looking Ahead: Planning for the Next Generation
The S7-1200 G1 has been a dependable and widely used platform, and it will continue to be supported for years to come.
However, the announcement of its phase-out is a clear signal that now is the time to:
Review your current automation assets
Assess your exposure to ageing PLC systems
Begin planning for future upgrades or migration
A proactive approach will ensure continuity, reduce risk, and position your systems for the next generation of industrial automation.
Final Thoughts
The discontinuation of the Siemens S7-1200 G1 is not an immediate concern, but it is an important strategic moment.
Businesses that plan early will have greater control over cost, performance, and long-term reliability.
If you’re currently reviewing your S7-1200 G1 systems, our team can support with lifecycle planning, repairs, and spare parts strategies.
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