The SIMATIC S5 range is a legacy control system. Siemens has announced the end of its product lifecycle, but some machines still depend on original hardware. Check the exact CPU and module before planning a replacement.
Lifecycle milestones by product family
| Family | Current reference status | Last order / production | Support / repairs |
|---|---|---|---|
| Siemens SIMATIC S5 (6ES5) | End of life cycle: no Siemens spares or repairs | not published | Life cycle ended 30 Sep 2020; no spares or repairs from Siemens since then |
Lifecycle status may vary by exact catalogue number, hardware series and market. Confirm the precise reference with the manufacturer before relying on any deadline.
Successors and migration considerations
- Siemens SIMATIC S5 (6ES5): Current Siemens range, e.g. S7-1500 (Siemens names no one-for-one replacement)
Migration is an engineering assessment, not an automatic drop-in substitution. Check program conversion, field wiring, communications, safety and commissioning requirements.
Find available spares
Inventory changes as items are sold and new consignments arrive, so we do not publish fixed quantities or condition claims on these reference guides.
Questions engineers ask
Does discontinued mean an installed controller must be replaced immediately?
No. It means the product's commercial lifecycle has changed, not that every installed unit has stopped functioning. Review spares availability, reliability, risk and your maintenance strategy.
Can Automation Outlet help source a legacy spare?
Yes. Send us the exact manufacturer part number, revision or series, quantity and required condition. Availability and testing status must be confirmed before an order.
Can a listed successor be swapped directly into my system?
Not necessarily. Replacement can require changes to software, wiring, communications, safety assessments and commissioning. Confirm compatibility with manufacturer documentation.
Manufacturer and supporting references
- Siemens SIMATIC S5 (6ES5): Source document ↗
Editorial review: 20 October 2026 · Prepared by Automation Outlet, an independent UK engineering business. Technical information is not a guarantee of stock, support entitlement or interchangeability.