The S7-300 password is not stored in plain text, but the hashing mechanism used in older generations is weak by modern standards.
7 Jan 2015 — Proceed as follows. * The MMC is slotted in the bay of the CPU. The CPU requests an overall reset (slow blinking of the STOP LED). Siemens S7-300 obsolescence: dates, risks & replacements siemens s7 300 password unlock exclusive
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. The S7-300 password is not stored in plain
For the Siemens S7-300 PLC, "unlocking" a password typically refers to removing CPU access protection or block know-how protection. While official channels state there is no legal way to recover a lost password without deleting the program The CPU requests an overall reset (slow blinking
How do you reset a SIMATIC S7-300 CPU and MMC (default ... - Support