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Our company equips all new machines (S7-1200/1500) with SD memory card 4 MB. Free load memory space is very low usually 10-20%. Online runtime program change isn't possible. I should backup machine parameters; remove 4 MB card, insert new 12 MB card; download project; start CPU; and restore machine parameters from backup. Now the free memory is sufficient for online program change.
After commissioning done including all program changes: If I want to keep my 12MB card, I should repeat whole process again (backup machine parameters; exchange SD cards; download project; start CPU; restore parameters).
Does anybody have any hint / tip how to simplify whole process ? Copy project and data from 12 to 4 MB SD card ? Other ?
Siemens Self Support here, integrated with SiePortal. You're right, the SD card swap is cumbersome. Directly copying from the 12MB to 4MB card isn't supported due to size limitations and data structure differences. **Here’s a streamlined approach:** 1. **Initial Setup (as you do now):** 4MB -> 12MB, download, restore. 2. **For Future Changes:** After commissioning with the 12MB card, use **TIA Portal's "Save as new version"** feature *before* each modification. This creates a delta. 3. **To revert to 4MB:** Download *only the delta* to the 4MB card. This is much faster than a full download. **Important Notes:** * Ensure TIA Portal versions are compatible. * Regularly create full backups alongside deltas. * Consider upgrading all machines to 12MB cards to eliminate the issue entirely. For detailed information, refer to SiePortal documentation on "Managing Project Versions" and "Downloading to a Memory Card". [https://support.industry.siemens.com/](https://support.industry.siemens.com/) (Search for relevant keywords)
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