Obsolescence & Migration · 7 min read · Updated November 2026
PLC and Drive End-of-Life Calendar 2026–2027
A single reference for the discontinuation dates that matter in the next eighteen months — Siemens, Rockwell, Mitsubishi, Omron, Schneider, ABB — with the successor platform and the action we recommend at each date. Verify every line against the manufacturer notice before you buy; notices change.
We maintain this calendar for our own sourcing desk and publish it because customers kept asking for one. Dates come from manufacturer product-change notifications and lifecycle pages as of November 2026; where manufacturers use their own milestone vocabulary we translate it into three plain states: Last order (final date to place an order at list price), Production end (no more new units) and Service end (repairs and spares stop). A line with a date in the past is included because the installed base is still large and the sourcing problem is current.
Siemens
| Product | Status | Date | Successor | Action |
|---|---|---|---|---|
| SIMATIC S7-300 CPUs, ET 200M (6ES7 3xx) | Production end (PM410) | 1 Oct 2025 | S7-1500, ET 200SP | Spares secured; migration plan for critical lines |
| SIMATIC S7-400 central I/O | Spares only | 1 Oct 2026 | S7-1500 (ET 200SP HA for process) | Audit now; PCS 7 users talk to Siemens about PCS neo path |
| SIMATIC S7-1200 first generation (G1) | Phase-out announced (PM400) | 1 Nov 2026 | S7-1200 G2 | No urgency — long tail; new designs on G2. See G1 vs G2 |
| ET 200S | Production end | Oct 2023 | ET 200SP | Surplus only; migrate with CPU |
| Comfort Panels 15 in and larger (1st gen) | Phase-out announced | 1 Oct 2024 | Comfort Panels V2 / Unified | Stock one spare per critical panel |
Rockwell Automation / Allen-Bradley
| Product | Status | Date | Successor | Action |
|---|---|---|---|---|
| PLC-5, SLC 500 (1747/1746) | Discontinued / End of life | Past | ControlLogix 5580 / CompactLogix 5380 | Migration project; surplus for bridging |
| MicroLogix 1000/1200/1500 | Discontinued | Past | Micro850/870 | Surplus only |
| MicroLogix 1100/1400 | End of life | Discontinuation announced | Micro870, CompactLogix 5380 | Last-time buy for spares |
| 1794-ACNR15 FLEX I/O ControlNet adapter | End of life | 31 Oct 2026 | 1794-AENTR (EtherNet/IP) | Replace ControlNet with EtherNet/IP |
| 1734-ADN POINT I/O DeviceNet adapter | End of life | 31 Dec 2026 | 1734-AENTR | Same — DeviceNet is sunset technology |
| PanelView Standard, PanelView Plus 6 | Discontinued | Past | PanelView 800, PanelView Plus 7 | Replace at failure or earlier |
| 1336 PLUS II drives | Discontinued | Past | PowerFlex 525 / 755 | Replace; note RIO adapters have no successor |
Mitsubishi Electric
| Product | Status | Date | Successor | Action |
|---|---|---|---|---|
| MELSEC-F FX3G / FX3GC | Last order / production end | Jun 2026 / Dec 2026 | FX5U / FX5UC / FX5S | Spares for installed base; new designs on FX5 |
| MELSEC-Q Universal CPUs (Q03UDE…Q26UDEH) | Last order / production end | 30 Sep 2026 / 30 Oct 2026 | MELSEC iQ-R (R04…R120) | Urgent spares; migration via RQ extension base |
| MELSEC-L (listed models) | Last order / production end | 30 Sep 2027 / 29 Oct 2027 | iQ-R or iQ-F | Plan 2027 spares |
| FX3U / FX3UC | Production end | 2028 | FX5U | Normal stock still; standardise new machines on FX5 |
| GOT1000 | Discontinued | Past | GOT2000 / GOT Simple | Replace at failure |
Omron
| Product | Status | Date | Successor | Action |
|---|---|---|---|---|
| CJ1G-CPU42P…45P (Europe) | Discontinued | Mar 2025 | NX1P2 / NX102 | Surplus only |
| CJ2M-CPU3x (EtherNet/IP) | Final order / last shipment | Mar 2027 / Jun 2027 | NX1P2 / NX102 | Last-time buy for spares in 2026 |
| CJ2M-CPU1x (Europe) | Final order / last shipment | Jun 2027 / Sep 2027 | NX1P2 | Same |
| CS1, NS-series HMIs | Winding down | Varies by model | NX7/NJ, NA5 | Replace HMIs first |
Schneider Electric
| Product | Status | Date | Successor | Action |
|---|---|---|---|---|
| Modicon Quantum 140 CPU 434 12U and others | Support end (varies by reference) | 8 Oct 2025 to 31 Dec 2030 | M580 with QEIO adapters | Check each reference on se.com |
| Modicon Premium (TSX P57) | Discontinued, service only | Standard service ends 31 Dec 2026 (many references) | M580 / M340 | Migration 2026–2027 |
| Modicon Momentum (170 xxx) | End of commercialisation | Past | Modicon STB / X80 distributed I/O | Full I/O replacement |
| Magelis XBT GT / XBT F | Discontinued | Past | Harmony ST6 / GTU | Replace at failure |
ABB
| Product | Status | Successor | Action |
|---|---|---|---|
| ACS550 | Limited | ACS580 | Replace at failure; stock per ten installed |
| ACS800 | Classic / Limited by frame | ACS880 | Proactive replacement on critical duty; see the drive guide |
| ACS350 / ACS355 | Classic (ACS350) / Active (ACS355) | ACS380 / ACS180 | ACS355 still fine for new machines |
| AC500 V2 CPUs (PM57x/PM58x) | Classic | AC500 V3 (PM56xx) | Spares; V3 migration with Automation Builder |
How to use this calendar
Match it against your own installed-base list (see the audit method in the S7-300 guide), mark every line where you own the product, and set two dates per line: a last-time-buy date six months before the manufacturer's last-order date, and a migration decision date. The spares formula tells you how many to buy. We update this page when notices change; if you see a date we have missed, tell us.
Reading manufacturer notices correctly
Each manufacturer publishes lifecycle information differently, and misreading it is how plants end up surprised. Siemens uses product-change notifications with PM codes and a "Product Lifecycle" tab on each order number in Industry Online Support; the "Successor" field there is the official replacement and the "spare part availability until" date is the one to put in your plan. Rockwell's Product Lifecycle Status tool shows Active, Active Mature, End of Life (with a discontinuation date) and Discontinued per catalog number, and the "Migration solutions" link gives the mapped replacement. Mitsubishi Electric FA publishes discontinuation notices with a "production discontinuation date" and a "repair acceptance deadline", usually seven years later; the global notice may differ from a regional one, and Japanese-market model suffixes are not always the ones sold in ASEAN. Omron's product discontinuation pages are regional, which is why some CJ2M dates differ between Europe and Asia. Schneider's product pages carry a lifecycle status and an end-of-service date per reference; the Green Premium documents list the substitute. ABB publishes drive lifecycle phases in the Drive Lifecycle Services guide with the Classic and Limited phase dates per frame size.
Building your own tracker
Keep a spreadsheet with one row per order number you own: quantity installed, quantity in stock, manufacturer lifecycle state and date, successor, migration decision date, owner. Review it quarterly against the manufacturer sources; the whole review takes an hour once the list exists. Subscribe to the manufacturers' lifecycle notification services (Siemens "Product notes" subscription, Rockwell Knowledgebase notifications, Mitsubishi FA news) so changes arrive by email. For plants with several hundred order numbers we run this review as a service and return the updated sheet with sourcing options for every line that changed state.
Need engineering help with this?
Our engineers apply this to real projects every week — selection, specification, commissioning. Send your question or a part number.
Quick answers
Where do these dates come from?
Manufacturer product-change notifications and lifecycle portals (Siemens Industry Online Support, Rockwell Product Lifecycle Status, Mitsubishi Electric FA discontinuation notices, Omron and Schneider product pages), as read in November 2026. Always confirm the exact part number against the current notice.
What is the difference between "last order" and "production end"?
Last order is the final date to place a purchase order with the manufacturer at normal conditions; production end is when the last units are built. After production end only distributor stock and surplus remain, and prices move with scarcity.
Can you source parts after the production end date?
Usually yes, from distributor residual stock, manufacturer spare-part programmes and tested surplus. We record firmware, series and origin for every unit and state them in the quotation.