EOL replacement finder

LOGO! CMR2040

Your automation part went EOL — here is every way out, with the compatibility catch on each one.

Manufacturer: Siemens
Category: Communication module / mobile gateway
Discontinued: 2024-09-01

Lifecycle status

Discontinued by Siemens on 1 September 2024 and now in the passive phase. Siemens points to the LOGO! CIM as the closest current module but has not designated a formal successor; the CIM is not a like-for-like replacement for the mobile-radio function.

Replacement paths, side by side

The decisive attribute in this vertical is software and runtime compatibility, not electrical specs. Read the compatibility column before the price column.

Route	What	Price band	Availability	Compatibility — the dealbreakers
Official successor	LOGO! CIM Siemens	€281 across 1 EU distributor Omnical, 2026-09-04	Listed at Omnical, no stock shown; lead time on request	The closest Siemens module, but not a drop-in: mobile radio needs the optional PCIe modem, so the CMR2040's cellular function is rebuilt rather than carried over. Siemens has not announced a phase-out for it, and it remains orderable. Why this matters ⌄
Caveat: Forum users report no formally designated successor; this row is the closest Siemens option, not a Siemens-declared one. Confirm the CIM's lifecycle status with Siemens before standardising on it.
Compatible third party	Ewon Cosy / Flexy (via Wachendorff) Ewon (HMS Networks)	Quoted on request; no public list price.	Not established in research	Third-party VPN/remote-access router, distributed in Germany by Wachendorff. Not a LOGO! accessory and not a mobile-radio module like-for-like - expect to rebuild the connection configuration rather than reuse it. Why this matters ⌄
Caveat: Wachendorff is the Ewon distributor, not a separate router manufacturer. If you are already on Ewon, this is the same vendor, not a second option. discussed on SPS-Forum →
Compatible third party	Industrial modem / router Phoenix Contact	€756–864 across 2 EU distributors DigiKey, 2026-09-04	In stock at DigiKey (1 pcs)	Third-party mobile gateway. Connection configuration is rebuilt. Why this matters ⌄
discussed on SPS-Forum →
Compatible third party	Raspberry Pi gateway Self-built	Hardware cost is low; the cost is engineering and long-term maintenance.	Always available	Named in the forum thread. Full flexibility, no vendor support, and you own the security patching. Why this matters ⌄
Caveat: Viable for one machine, hard to defend across a fleet. discussed on SPS-Forum →

Where the research did not establish a figure, this page says so rather than estimating one. A number you cannot defend is worse than no number.

What the community actually said

These pages are built from forum threads, not brochures. The tacit gotchas — the ones that are not on any datasheet — live in these discussions.

LOGO! CMR2040 successor? · SPS-Forum.de

Links open a search on the forum the discussion took place on. German thread titles are given here in English translation.

Manufacturer sources

https://support.industry.siemens.com/cs/document/109973456/announcement-of-product-phase-out-for-logo!-cmr2040-(6gk7142-7ex00-0ax0)-

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