Method 1: Using Siemens SIMATIC Step 7 (Manager or TIA Portal)
This mistake often occurs when an engineer inserts a Siemens MMC into a laptop or desktop multi-card reader while attempting to upload or download project files. Windows detects an "unreadable" drive and automatically prompts the user to format it. The engineer, believing the card is corrupted, clicks "Format," instantly destroying the card's usability. siemens mmc card format tool
The CPU STOP light is blinking slowly, indicating a memory reset request. Method 1: Using Siemens SIMATIC Step 7 (Manager
: If you click "Format," Windows overwrites the proprietary hidden partition and registers (CID/CSD) that the Siemens CPU uses to identify the card. Once this happens, the card becomes a "dead" brick to the PLC, even though it works perfectly as a standard 16MB or 32MB card for a computer. Official Methods for "Formatting" (Resetting) The CPU STOP light is blinking slowly, indicating