Siemens defines the lifecycle of S7‑300 and ET 200M components as follows:

  • 01/10/2023 – Phase-out announced (P.M400)
  • 01/10/2025 – Type discontinuation – Spare parts only (P.M410)
  • 01/10/2033 – Discontinuation (P.M490)
  • 01/10/2035 – End of lifecycle – Obsolete (P.M500)

The Siemens lifecycle follows a clear path. During the active phase (P.M300) products are widely available at standard prices. Once the phase-out is announced (P.M400), as with the S7-300 and ET200M in October 2023, availability remains but demand begins to rise.

At the type discontinuation stage (P.M410), which takes effect in October 2025, new production will cease completely. Only spare parts will be available, which often results in price increases and a tighter supply.

Starting in 2033, spare availability decreases significantly. Costs rise as stock becomes limited. By 2035, the range reaches P.M500, becoming fully obsolete and unsupported. In practice, users who act early can secure critical spare parts. They can also plan for migration. This proactive approach allows them to retain more control over costs, continuity, and supply stability.

For more information on the official lifecycle of the S7-300 and ET200M components, visit the Siemens portal.