PLC migration
Is your PLC end-of-life? Browse the full overview of platforms, their status and migration paths.
Which platforms are approaching end-of-life?
Three manufacturers have officially announced platform discontinuations. Replacement hardware is still available but support and spare parts are running out.
S7-300 / ET 200M
Product Milestone 410 from 1 October 2023. Spare parts expected available until approximately 2033. Thousands of installations active in NL/DE. Migration to S7-1500 + TIA Portal is the standard path.
Details & migration paths →S5 family
Product Milestone 400 approximately 2015. Age 20-30+ years. No original spare parts available. Emulators available as a bridging measure but not a long-term solution. Migration to S7-1200/S7-1500.
Details & migration paths →Allen-Bradley PLC-5 / SLC 500
PLC-5 officially discontinued June 2017. SLC 5/05 discontinued March 2024 (most recent variant). Rockwell offers Silver Support but no new hardware. Migration to ControlLogix 5580 or CompactLogix 5380.
Details & migration paths →PLC families & migration paths
| PLC family | Vendor | EOL date | Status | Migration path |
|---|---|---|---|---|
| Siemens S5-90 / S5-95 | Siemens | 2001 | End-of-life | Siemens S7-1200 or S7-1500 |
| Siemens S5-100 / S5-115 | Siemens | 2001 | End-of-life | Siemens S7-1500 |
| Siemens S5-135 / S5-155 | Siemens | 2001 | End-of-life | Siemens S7-1500 / ET 200SP |
| Siemens S7-300 / ET 200M | Siemens | Okt 2023 | End-of-life | Siemens S7-1500 + TIA Portal |
| Siemens S7-400 | Siemens | 2030 | Limited support | Siemens S7-1500H (high availability) |
| Siemens S7-1200 | Siemens | Active | Active | No migration required |
| Siemens S7-1500 | Siemens | Active | Active | No migration required |
| Allen-Bradley PLC-5 | Rockwell | 2023 | End-of-life | AB ControlLogix 5580 or CompactLogix 5380 |
| Allen-Bradley SLC 500 | Rockwell | 2023 | End-of-life | AB CompactLogix 5380 or MicroLogix 1500 |
| Allen-Bradley MicroLogix 1000 | Rockwell | 2023 | End-of-life | AB Micro850 or MicroLogix 1400 |
| Allen-Bradley ControlLogix 5500 | Rockwell | Limited | Limited support | AB ControlLogix 5580 |
| GE Fanuc 90-30 | Emerson | 2020 | End-of-life | Emerson PACSystems Rx3i or Siemens S7 |
| GE Fanuc 90-70 | Emerson | 2020 | End-of-life | Emerson PACSystems RX7i |
| Schneider Modicon 984 | Schneider | 2010 | End-of-life | Schneider Modicon M340 or M580 |
| Schneider TSX Micro | Schneider | 2018 | End-of-life | Schneider TM221 or TM251 |
| Schneider Modicon M340 | Schneider | Limited | Limited support | Schneider Modicon M580 |
| B&R 2010 / 2005 | B&R | 2015 | End-of-life | B&R X20 or Siemens S7-1500 |
| Omron C200H / CQM1 | Omron | 2010 | End-of-life | Omron NX1P2 or NX102 |
Platform-specific migration paths
Migration from S7-300 and ET 200M to S7-1500 + TIA Portal. Lifecycle overview, spare parts horizon, and step-by-step code migration.
S5 installations 20-30+ years old. Migration routes to S7-1200, S7-1500 and S7-1500T (kinematics). Code translation and I/O mapping.
PLC-5 discontinued June 2017. Migration to ControlLogix 5580. Ladder-to-Structured-Text conversion, I/O chassis replacement, and Remote I/O to EtherNet/IP.
SLC 5/05 discontinued March 2024. Migration to CompactLogix 5380 or MicroLogix 1500. Retain existing panel wiring.
Cutover strategy: phased conversion per machine or line, with FAT on simulator and minimal SAT window. Zero unplanned downtime.
S7-400 limited availability after 2030. Migration to S7-1500H for high-availability processes. Planning and risk assessment.
How we migrate
Every migration follows three steps. Production continues during preparation; the cutover window is kept as short as possible.
Ready to migrate?
A migration starts with a technical intake. We map the scope, timeline and risks.