15.10.2025
Updated on 20.10.2025
4 Min.
Siemens has announced the product phase-out (PM400) for the SIMOTION D motion control system as of 1 October 2025. This article outlines the key dates, implications, and recommended actions.
Product discontinuation (PM410): from 1 October 2026 - thereafter only spare parts available
The products affected by the PM400/PM410 change belong to the Siemens SIMOTION motion control system and its accessories. These include control assemblies such as SIMOTION D410-2, SIMOTION D4x5-2, associated memory cards, expansion assemblies such as CX32-2, and communication modules such as CBE30-2.
These assemblies are typically used for axis and motion control, the implementation of synchronous motion sequences, CNC functions, interpolaction, and programmed motion control in machines and systems. They form an integral part of machinery in mechanical engineering, packaging systems, production-related automation, robotics, and similar application fields.
The product phase-out affects both the hardware components and the associated SIMOTION SCOUT and SCOUT TIA engineering software, as well as the firmware versions (e.g. kernel versions v5.4 to v5.7).
This change therefore affects both maintenance engineers operating existing machines and purchasers responsible for planning spare parts or new installations.
The milestone PM400 (product phase-out announcement) marks the beginning of Siemens' ten-year spare parts obligation. From this date, the product can still be ordered as a new part but is no longer actively marketed. For SIMOTION, this milestone has been set for 1 October 2025.
During the PM400 phase, new parts remain available. However, spare part prices may differ from the original new prices. In the Siemens Mall, only new prices are generally displayed; spare part prices often need to be requested directly from the Siemens contact.
Important: The ten-year spare parts guarantee begins with PM400, i.e. on 1 October 2025, and not at the time of production discontinuation. For SCOUT and SCOUT TIA, the PM400 milestone has also been set for 1 October 2025.
This makes the PM400 date a key point in planning for spare parts stocking, spare parts strategy, and migration.
The product discontinuation (PM410) is scheduled for 1 October 2026. From this date onwards, the affected SIMOTION D assemblies will no longer be supplied as new parts. Only spare part supply will be possible - as long as components are still available.
For operators and maintenance personnel, this specifically means:
After PM410, stricter limitations will apply to the availability and pricing of replacement materials.
EICHLER is the only service provider on the market that offers repairs down to component level - with a transparent cost estimate. Customers pay only for the actual defect, not a flat rate per module.
Throgh the online shop, function-tested used and new spare parts can be obtained - often at short notice and cost-efficient. EICHLER provides a Life Cycle and Repair Management, including analysis of existing inventories, requirements planning, spare parts strategy, and migration recommendations.
For repaired or supplied spare parts, EICHLER provides up to 36 months of warranty and guarantee - exceeding what is common in many markets. This creates an attractive bridge between Siemens product obsolescence and sustainable continued use in practical applications.
After PM410, the module can only be obtained as a spare part - if available. If no suitable spare part exists, repair or module replacement are the onl remaining options. Early stocking or initiating repair arrangements is therefore essential.
Siemens guarantees spare parts for 10 years from the PM400 date (in this case, 1 October 2025). After that, this obligation ends (PM490). However, availability may vary depending on the component, particularly for discrete semiconductors.
This is possible up to the PM410 milestone - new parts can still be ordered. After PM410, the supply of new parts will be discontinued, and typically only spare part delivery or repair in exchange for the defective assembly will be possible.
Within the scope of spare parts supply, Siemens may apply increased prices, as production volumes and quantities become smaller. Prices may therefore be higher than comparable new part prices.
Not necessarily immediately, but advisable in the medium term. Switching to modern controllers offers better integration, future security, and software support. However, migration must be carefully planned and implemented in a way that ensures operational reliability.
With the product phase-out of Siemens SIMOTION D as of 1 October 2025 (PM400) and the product discontinuation as of 1 October 2026 (PM410) a challenging period begins for maintenance and procurement departments. By forward-looking planning, targeted spare parts stocking and the use of specialised service providers such as EICHLER, system availability can be ensured - even far beyond technology's life cycle.
Source: Siemens
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