S7-1200 G1 Phase-Out: The Dates Automation Teams Should Plan Around
Siemens plans to begin the gradual phase-out of the first-generation SIMATIC S7-1200 portfolio on November 1, 2026. New-device ordering is planned to remain available through October 31, 2027, while module spare-parts availability is planned to continue for years afterward.
What the announcement means
This is a lifecycle transition, not an instruction to remove working controllers overnight. Existing machines can continue to operate, but designers, maintenance teams and purchasing departments should start separating three needs: controllers for new projects, replacement stock for the installed base, and a migration plan for future machine revisions.
Lifecycle planning starts with the exact installed S7-1200 configuration.
Three dates to put on the project calendar
Gradual phase-out begins
Start formal lifecycle reviews for active bills of material, service stock and planned machine builds.
Planned end of new-device ordering
Confirm remaining G1 demand early; lead time and availability can vary by exact MLFB and region.
Planned module spare-parts horizon
Siemens states planned spare-parts availability for modules until approximately 2036.
Audit the installed base before buying
Record the complete MLFB, hardware version, firmware, I/O expansion, signal boards, communication modules, safety requirements and TIA Portal project version for every critical machine.
Do not assume a drop-in swap.
A migration can affect device selection, cabinet space, terminal assignments, wiring, firmware, engineering software and program behavior. Validate the exact configuration before ordering or commissioning.
Use the complete MLFB and nameplate details when auditing spares or planning migration.
A practical four-step response
Separate active production assets, service-only systems and new designs.
Count critical CPUs and modules, then compare that count with existing spares.
Decide which systems remain on G1 and which projects should move to S7-1200 G2.
Build, download and commission a representative machine before changing a fleet.
Useful S7-1200 G1 references
Examples from the current S7-1200 CPU range can help teams identify the complete ordering code before checking stock or planning a replacement.
Need to check an exact S7-1200 ordering code?
Send the complete MLFB, quantity, firmware or hardware details, destination country and required delivery date. Availability and compatibility should be confirmed for the exact configuration.
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