Confirmed Software Mapping
Use the product delivery release and exact order number/MLFB before purchase; compatibility is version- and variant-dependent. The evidence supports this baseline mapping:
| Device family | Engineering software | Dependency / caution |
|---|---|---|
| S7-200 | STEP 7 Micro/WIN | Original S7-200 package. |
| S7-200 SMART | Micro/WIN SMART | Not the same software as original S7-200 Micro/WIN. |
| S7-300/400 | STEP 7 V5.5 or STEP 7 TIA Professional | Depends on CPU age and installed base. |
| S7-1200 | STEP 7 TIA Basic/Professional | Confirm firmware/portal version by MLFB. |
| KTP 400/600/1000 | WinCC TIA Basic/Professional | Confirm panel generation. |
| TP 700/900 | WinCC flexible or WinCC TIA Basic/Professional | Depends on exact variant and existing project format. |
| OP series | Protool, WinCC flexible, or WinCC TIA Basic/Professional | Ambiguous: cited split is OP3 = Protool, OP37 = WinCC flexible; not every WinCC flexible version converts older OP projects. |
| G120, S120, MM420/440 | STARTER | Evidence points to SINAMICS/MICROMASTER STARTER, Siemens Industry Online Support document 26233208; verify each drive MLFB. |
| WinCC Explorer V7.2, Chinese | WinCC V7.2 SCADA line | Verify regional/language release and license before reuse or upgrade. |
Decision Path Before Buying Licenses
- Record every CPU, panel, drive and SCADA MLFB/order number plus installed project versions.
- Read each delivery release to confirm whether the device is configured in classic STEP 7/WinCC flexible or TIA Portal.
- Separate S7-200 from S7-200 SMART: do not assume one Micro/WIN license opens both.
- For OP and TP panels, identify the legacy project source first; OP3-type projects point to Protool, while later OP/TP devices may require WinCC flexible or migration into TIA.
- For drives, validate STARTER support against the exact SINAMICS/MICROMASTER MLFB rather than the family name alone.
Legacy Migration Constraints
The main risk is not the family label but the project lineage: S7-300/400 can be classic STEP 7 V5.5 or TIA depending on age, TP 700/900 can be WinCC flexible or TIA depending on variant, and older OP conversions are limited by the WinCC flexible version used. Keep the original programming package available until a tested migration path exists.
Procurement and Verification
Where multiple packages are required, evaluate a Siemens programming device/package bundle through official Siemens sales or support channels. Before commissioning, open an offline copy of each project in the selected software, confirm device recognition, compile/download in a controlled test, and archive the matching versions for future service.
FAQ
What software programs Siemens S7-200 and S7-200 SMART?
S7-200 uses STEP 7 Micro/WIN, while S7-200 SMART uses Micro/WIN SMART; they are not the same package.
How do I choose between STEP 7 V5.5 and TIA Portal for S7-300/400?
Check the CPU MLFB and delivery release: older installed bases may remain on STEP 7 V5.5, while newer or migrated projects use STEP 7 TIA Professional.
Which tool covers Siemens G120, S120 and MM420/MM440 drives?
The evidence points to STARTER for SINAMICS/MICROMASTER drives, referencing Siemens support document 26233208; verify each exact drive MLFB before licensing.