PLC obsolescence & lifecycle dates

End of life cycle: no Siemens spares or repairs

• Lifecycle status: End of life cycle: no Siemens spares or repairs
• Last order / production: not published
• Support / repairs: Life cycle ended 30 Sep 2020; no spares or repairs from Siemens since then
• Successor / migration: Current Siemens range, e.g. S7-1500 (Siemens names no one-for-one replacement)

Source document ↗

Read related AO lifecycle guide ↗

Always check the exact part number and hardware revision.

CPUs active; central I/O spares-only from 1 Oct 2026

• Lifecycle status: CPUs active; central I/O spares-only from 1 Oct 2026
• Last order / production: Central I/O: new parts until 1 Oct 2026
• Support / repairs: Central I/O: PM490 not planned before Oct 2035. CPUs: Siemens states availability beyond 2035
• Successor / migration: I/O: ET 200MP, ET 200SP or ET 200SP HA. CPUs stay current (S7-410 for PCS 7)

Source document ↗ · Additional reference ↗

Always check the exact part number and hardware revision.

Discontinued: spare parts only (PM410)

• Lifecycle status: Discontinued: spare parts only (PM410)
• Last order / production: New parts until 1 Oct 2023
• Support / repairs: Not published as a single date (Siemens policy: PM490 not before 10 years after PM400)
• Successor / migration: ET 200SP

PM400 date (1 Oct 2020) is from Siemens partner posts, not the Siemens notice read.

Source document ↗ · Additional reference ↗

Always check the exact part number and hardware revision.

Active

• Lifecycle status: Active
• Last order / production: not published
• Support / repairs: not published
• Successor / migration: n/a (current range)

Source document ↗ · Additional reference ↗

Always check the exact part number and hardware revision.

Discontinued

• Lifecycle status: Discontinued
• Last order / production: not published
• Support / repairs: Not published
• Successor / migration: Micro800 (Rockwell MicroLogix to Micro800 modernisation guide)

Source document ↗ · Additional reference ↗

Read related AO lifecycle guide ↗

Always check the exact part number and hardware revision.

Discontinued

• Lifecycle status: Discontinued
• Last order / production: not published
• Support / repairs: Not published
• Successor / migration: Micro800

Source document ↗ · Additional reference ↗

Read related AO lifecycle guide ↗

Always check the exact part number and hardware revision.

Discontinued

• Lifecycle status: Discontinued
• Last order / production: not published
• Support / repairs: Not published
• Successor / migration: Micro800

Source document ↗

Read related AO lifecycle guide ↗

Always check the exact part number and hardware revision.

Active Mature

• Lifecycle status: Active Mature
• Last order / production: not published
• Support / repairs: not published
• Successor / migration: Micro800 (Rockwell lists a replacement)

Source document ↗

Read related AO lifecycle guide ↗

Always check the exact part number and hardware revision.

Discontinued

• Lifecycle status: Discontinued
• Last order / production: not published
• Support / repairs: Not published
• Successor / migration: Micro800 or CompactLogix

Source document ↗

Read related AO lifecycle guide ↗

Always check the exact part number and hardware revision.

Discontinued

• Lifecycle status: Discontinued
• Last order / production: not published
• Support / repairs: Not published
• Successor / migration: CompactLogix 5370 or 5380

Source document ↗

Always check the exact part number and hardware revision.

Discontinued: service only

• Lifecycle status: Discontinued: service only
• Last order / production: End of active sale 31 Dec 2018 (per Schneider notice reported by partners); se.com shows e.g. TSXP573634M and TSXAEY414 discontinued 2 Dec 2020
• Support / repairs: End of standard service 31 Dec 2026 (se.com product pages)
• Successor / migration: Modicon M580 / Modicon X80 I/O (se.com names e.g. BMXART0414 for TSXAEY414)

Dates vary by reference.

Source document ↗ · Additional reference ↗

Read related AO lifecycle guide ↗

Always check the exact part number and hardware revision.

End of commercialisation: dates per reference

• Lifecycle status: End of commercialisation: dates per reference
• Last order / production: Selected 140 I/O ended 31 Dec 2021; remaining references removed from active sale 31 Dec 2022, obsolescence 15 Jan to 31 Dec 2023 (Schneider notice). Some 140 I/O still orderable to 31 Dec 2030 per se.com
• Support / repairs: Per reference: e.g. 140CPU43412UC ended 8 Oct 2025; others 31 Dec 2026 to 31 Dec 2030
• Successor / migration: Modicon M580 (Quantum Ethernet I/O / X80)

Always check the exact 140 reference; C (coated) versions have different dates.

Source document ↗ · Additional reference ↗

Read related AO lifecycle guide ↗

Always check the exact part number and hardware revision.

Discontinued: production ended

• Lifecycle status: Discontinued: production ended
• Last order / production: Emerson sold remaining factory inventory until 30 Sep 2020 (Emerson notice, Aug 2020)
• Support / repairs: Not published
• Successor / migration: PACSystems RX3i (IC695/IC694)

The often quoted "discontinued 1 Oct 2017" date is from resellers, not Emerson: not used.

Source document ↗ · Additional reference ↗

Read related AO lifecycle guide ↗

Always check the exact part number and hardware revision.

Discontinued

• Lifecycle status: Discontinued
• Last order / production: Mature from 1 May 2015 (GE bulletin T-15-04-01); now listed Discontinued in Emerson CPU manual
• Support / repairs: Not published
• Successor / migration: CPU310 > CPE310; CPU315 > CPE310 or CPE330; CPU320 > CPE330

Source document ↗ · Additional reference ↗

Read related AO lifecycle guide ↗

Always check the exact part number and hardware revision.

Active platform (CPE302/305/310/330 Active); individual modules vary

• Lifecycle status: Active platform (CPE302/305/310/330 Active); individual modules vary
• Last order / production: Not published
• Support / repairs: Not published
• Successor / migration: n/a (current range)

Emerson lifecycle spreadsheet (KBA000083225) needs a login, so module-level status was not checked.

Source document ↗ · Additional reference ↗

Read related AO lifecycle guide ↗

Always check the exact part number and hardware revision.

Still listed by Emerson (no discontinuation notice found)

• Lifecycle status: Still listed by Emerson (no discontinuation notice found)
• Last order / production: Not published
• Support / repairs: Not published
• Successor / migration: Emerson positions PACSystems RSTi-EP / RX3i for new designs (not an official like-for-like)

Source document ↗

Read related AO lifecycle guide ↗

Always check the exact part number and hardware revision.

Unverified: superseded by Alpha i / Beta i; FANUC publishes no dated end-of-life

• Lifecycle status: Unverified: superseded by Alpha i / Beta i; FANUC publishes no dated end-of-life
• Last order / production: Not published
• Support / repairs: FANUC states lifetime support for its products (contact FANUC service)
• Successor / migration: FANUC Alpha i / Alpha i-B series

Do not publish a status; show "ask us".

Source document ↗ · Additional reference ↗

Read related AO lifecycle guide ↗

Always check the exact part number and hardware revision.

Discontinued (CPUs)

• Lifecycle status: Discontinued (CPUs)
• Last order / production: CJ1G-CPU42P to 45P (Europe): Mar 2025
• Support / repairs: CJ1G/CJ1H: 7 years' repairs promised (to around 2019). CJ1G-CPU4xP: 7 years after final order
• Successor / migration: CJ2M / CJ2H (CJ2M itself is being replaced by CJ3M)

Source document ↗ · Additional reference ↗

Always check the exact part number and hardware revision.

Discontinued; repair period over

• Lifecycle status: Discontinued; repair period over
• Last order / production: not published
• Support / repairs: Omron promised repairs for 7 years, so to around Mar 2019
• Successor / migration: CJ2M (now CJ3M)

Omron's own notice, read from a third-party copy; Omron's site did not serve it.

Source document ↗

Always check the exact part number and hardware revision.

Active

• Lifecycle status: Active
• Last order / production: not published
• Support / repairs: not published
• Successor / migration: n/a (current range)

Source document ↗

Always check the exact part number and hardware revision.

Existing installations are in the spares-only phase, not automatically unsupported.

PM410: spares-only

1 Oct 2025

PM490: discontinuation

Planned from Oct 2033; exceptions apply

Replacement direction

S7-1500 / ET 200SP; engineering assessment required

What this means: Siemens documentation describes spares availability after product cancellation. PM490 is not the same as PM500: it must not be presented as a definite end to all support. Some subcomponents had earlier deadlines.

Siemens has announced the phase-out of the first-generation platform.

Phase-out announcement takes effect

1 Nov 2026

Final order for your MLFB

Check Siemens notice / product record

Successor platform

SIMATIC S7-1200 G2

What this means: The G1 family is not being switched off in November 2026. Check your individual product number for ordering and availability; the G2 platform requires compatibility planning.

The 1747-L552 processor is discontinued, with repair options potentially available.

1747-L552 discontinued

31 Mar 2024

Repair or exchange

Check availability with Rockwell

Modernisation

ControlLogix or CompactLogix design review

What this means: The dated evidence relates to catalog number 1747-L552. Do not assume every SLC 500 module shares this date. Software, networking and I/O strategy matter when migrating.

The 1785-L80E PLC-5 processor is discontinued.

1785-L80E discontinued

31 Jul 2017

Repair services

Rockwell lists repair services; enquire for exact unit

Migration

Engineering replacement, not a direct drop-in

What this means: The PLC-5 system is legacy hardware. Photograph the exact 1785 number and series before arranging critical spares or upgrades.

Rockwell has announced an October 2026 discontinuation date for this adapter.

Discontinuation date

31 Oct 2026

Replacement category

Engineering replacement

Confirm

Exact series and connected network

What this means: Do not treat this as discontinuation of every FLEX I/O module. ControlNet architecture affects replacement choices.

The 1794-AENT is marked End of Life with a published 2028 discontinuation date.

Discontinuation date

30 Sep 2028

Rockwell named replacement

1794-AENTR

Migration

Check rack, network and device compatibility

What this means: An announced discontinuation date is not the same as an immediate cessation of supplies. Confirm availability before a last-time buy.

The DeviceNet adapter has a published discontinuation date at the end of 2026.

Discontinuation date

31 Dec 2026

Rockwell replacement

No planned Rockwell replacement listed

Action

Review DeviceNet dependencies and spare adapter stock

What this means: This is specific to 1734-ADN; other POINT I/O network adapters can be active.

The 1734-AENT product page currently labels this adapter Active.

Rockwell lifecycle

Active at date checked

Discontinuation

No date shown on cited product page

Action

Check series and firmware before purchase

What this means: This is not a blanket statement for every 1734 adapter or module: the DeviceNet 1734-ADN entry has a separate EOL date.

The listed Universal QCPUs have passed their global order deadline; production ends in October 2026.

Global last-order date

30 Sep 2026 (passed)

Production discontinuation

30 Oct 2026

Repair support listed through

31 Oct 2033

What this means: Mitsubishi bulletin FA-A-0418-A applies to the specifically named QnUD / QnUDE / QnUDH / QnUDEH CPUs. High-speed QnUDV and other Q modules are not automatically covered by this earlier deadline. Mitsubishi suggests QnUDV or iQ-R alternatives subject to compatibility.

A later bulletin announces further MELSEC-Q discontinuations for 2029.

Planned order deadline

30 Sep 2029 for listed models

Planned production end

31 Dec 2029 for listed models

Precise applicability

Check FA-A-0495-A and any model exceptions

What this means: The 2029 programme is not a single blanket rule for every Q-series SKU: earlier bulletins already discontinue some processors and modules. Identify your exact model from the bulletin.

Mitsubishi lists production discontinuation in December 2026.

Global order acceptance

Until Jun 2026 (month published)

Production discontinuation

Dec 2026

Migration direction

MELSEC iQ-F FX5 family — verify compatibility

What this means: The manufacturer publishes the global order month rather than an exact last day here. Regional distributors can use different deadlines, so do not assume new stock is available.

The high-functionality FX3U family has a published March 2028 global order cut-off.

Order acceptance until

31 Mar 2028

Production discontinuation

30 Sep 2028

Repair support planned through

30 Sep 2035; individual exceptions apply

What this means: Mitsubishi bulletin FAM-A-0116-B notes exceptions, including some items with shorter repair periods. Check local UK / EU last-time-buy arrangements rather than assuming the global date guarantees regional ordering.

Many MELSEC-L models have a global order deadline in September 2027.

Global order acceptance

30 Sep 2027 on listed models

Production discontinuation

29 Oct 2027 on listed models

Repair support on listed models

31 Oct 2034

What this means: Mitsubishi also shows earlier dates for certain MELSEC-L modules. Check the exact CPU or I/O number, rather than applying these dates to all L-series hardware.

Omron plans to retire the CPU3x models and introduce CJ3M successors.

Final order entry

End of Mar 2027

Last shipping

End of Jun 2027

Suggested successor

Corresponding CJ3M-CPU3x (verify implementation)

What this means: The European Omron notice differentiates final order, last shipping and production status; these should not be labelled interchangeably. Confirm the notice for your region and variant.

European discontinuation is linked to regulatory transition; regional scope matters.

Europe final order entry

End of Jun 2027

Europe last shipping

End of Sep 2027

Suggested successor

Corresponding CJ3M-CPU1x

What this means: Omron states this CPU1x discontinuation is Europe only; do not describe it as worldwide. Check the CE-marking change and installation requirements with Omron.