Follow the onscreen prompts to confirm. The CPU will clear all internal data and return to a "clean" state. 3. Using TIA Portal for Known Passwords
Select and choose the type of reset required (e.g., Factory Reset).
The CPU will detect the empty card and wipe its internal memory, effectively removing any password-protected configurations. 2. Factory Reset via the CPU Display siemens s71500 password reset top
1. Resetting via the SIMATIC Memory Card (Standard Recovery)
Delete all visible files and folders (specifically the SIMATIC.S7S folder and any .S7S files). Do not delete hidden system files . Follow the onscreen prompts to confirm
Reinsert the empty card into the CPU and power it back on.
Power down the PLC and remove the SIMATIC Memory Card. Using TIA Portal for Known Passwords Select and
Resetting Your Siemens S7-1500 PLC Password Losing access to a Siemens S7-1500 PLC due to a forgotten password can halt production and prevent critical updates. While these controllers are built with high-level security to protect intellectual property, there are several recovery paths depending on whether you still have access to the original project and which level of protection is active.