PALM Parts Solution helps you migrate from obsolete Siemens hardware to current SIMATIC and SINAMICS families — without dropping the spare-parts lifeline that keeps your installed base running today. Pick a migration path below for engineering notes, target hardware and a no-obligation quote.
SIMATIC S7-300 → S7-1500 Migration
Engineering, hardware and TIA Portal upgrade path from S7-300 + ET 200M to S7-1500 + ET 200SP. Covers CPU mapping, signal-module conversion, PROFIBUS-to-PROFINET migration and program conversion in TIA Portal.
- From
- S7-300 (315-2 PN/DP, 317-2 PN/DP, 319-3 PN/DP)
- To
- S7-1500 (1513, 1515, 1516 PN/DP) with ET 200SP
SIMATIC S7-400 → S7-1500 Migration
Replacement strategy for S7-400 / S7-400H process and motion controllers. Maps standalone and redundant CPUs to S7-1500 / S7-1500R/H, with options for keeping ET 200M I/O or migrating to ET 200SP HA.
- From
- S7-400 (412, 414, 416, 417) and S7-400H redundant
- To
- S7-1500 / S7-1500R/H with ET 200SP HA
SIMATIC S7-200 → S7-1200 Migration
Path for small-machine S7-200 installations to S7-1200 with TIA Portal. Covers I/O mapping, communication retrofits and program conversion notes.
- From
- S7-200 (CPU 222, 224, 226 — MicroWin)
- To
- S7-1200 (1212C, 1214C, 1215C) in TIA Portal
MICROMASTER → SINAMICS Migration
Drop-in and engineered replacements for MICROMASTER 410/420/430/440 with SINAMICS V20, G120C and G120 modular drives. Includes parameter conversion notes and macro-driven setup.
- From
- MICROMASTER 4 (MM410, MM420, MM430, MM440)
- To
- SINAMICS V20, SINAMICS G120C, SINAMICS G120
SIMOVERT MasterDrives → SINAMICS Migration
Engineered migration from SIMOVERT MasterDrives Vector Control / Motion Control to SINAMICS S120 / S150 multi-axis systems. Covers control philosophy, DRIVE-CLiQ topology and mechanical retrofit considerations.
- From
- SIMOVERT MasterDrives VC / MC
- To
- SINAMICS S120 Booksize / Chassis, SINAMICS S150
Legacy Siemens PLC Upgrade Paths (S5 & early S7)
Strategy for upgrading SIMATIC S5 (95U/100U/115U/135U/155U) and very early S7-300 to modern S7-1500 platforms, including bridging hardware, communications and program migration.
- From
- SIMATIC S5 (95U, 100U, 115U, 135U, 155U) and first-gen S7-300
- To
- SIMATIC S7-1500 + ET 200SP
Siemens migration support
24/7 emergency Siemens sourcing — SIMATIC, SINAMICS, SITOP and SINUMERIK back online fast.
Custom pricing on S7, ET 200, SINAMICS, SIRIUS, SCALANCE and obsolete Siemens parts.
Talk to engineers who know TIA Portal, Step 7, Starter and DriveES — not call-center agents.
DHL, FedEx, UPS — Siemens parts delivered door-to-door in 1-4 business days.
Tested Siemens stock: SIMATIC S7-300/400/1200/1500, SINAMICS G/S/V, MICROMASTER, SIMOREG.
We hunt down discontinued Siemens MLFB numbers globally — even decade-old SIMOVERT and SIMODRIVE.
Engineering review on whether to repair, replace, or migrate your Siemens hardware.
S7-300 → S7-1500, MICROMASTER → SINAMICS, SIMOVERT → SINAMICS migration support.
Frequently asked questions
Can I migrate my Siemens PLC without rewriting the program?
TIA Portal includes a Migration Tool that converts STEP 7 v5.x and MicroWin projects to TIA Portal projects targeting S7-1200 / S7-1500. Most logic blocks convert cleanly; HMI tags, motion blocks and proprietary FBs may need rework. We can quote engineering support along with the hardware.
How long does Siemens support S7-300 and S7-400?
Siemens has announced phase-out dates for S7-300 and most S7-400 CPUs. We can still supply new, surplus and refurbished units while you plan the migration — and we keep the spares to bridge the gap.
Is MICROMASTER 4 truly obsolete?
Yes — MICROMASTER 4 is in the obsolete phase. SINAMICS V20 / G120C / G120 are the recommended successors. We stock refurbished MM440 and similar units for plants that need to wait before migrating.
Do you supply migration kits or just spare parts?
Both. For most projects we quote the new CPUs / drives / I/O, the cabling and adapter accessories, and optional engineering services for parameter and program migration.
Need to keep legacy hardware running while you plan?
We carry new, surplus and refurbished Siemens spares to bridge any migration window — including discontinued S7-300, MICROMASTER and SIMOVERT inventory.
Browse Obsolete Siemens Parts