Simatic S7 is a line of programmable logic controllers (PLCs) from Siemens, a well-known German multinational conglomerate. These PLCs are widely used in industrial automation.
Offline Operation: The software operates strictly on project files stored on a computer’s hard disk (such as .s7p projects or .s7l libraries). It does not operate "online" directly within a PLC's memory.
Remove & Set Protection: Easily unlock or relock blocks (OB, FB, FC) in S7 projects (*.s7p) and libraries (*.s7l). Simatic S7 Can Opener V1.31 33
Use with caution. The software is intended for legal owners of the code to recover lost work; reverse engineering copyrighted software may violate licensing agreements.
According to documentation from sites like Runmode.com, the tool provides a straightforward interface where users select a project, view a list of blocks, and use "Protect" or "Unprotect" buttons to modify the status. If successful, it allows the user to see the internal Statement List (STL) code and any original comments, provided they were included in the compiled version. S7 Can Opener - Runmode.com Simatic S7 is a line of programmable logic
Version 1.31 specifically addressed several nuances in how Siemens implemented the block header structures in later firmware revisions. By deciphering the specific byte structures that dictate the lock status, the tool resets the block properties, allowing the engineer to view the code—typically in Statement List (STL) format—even if the original source (LAD/FBD) is unrecoverable.
Software and firmware updates are crucial for ensuring the optimal performance and security of PLCs. Versioning, such as "V1.31 33", indicates that updates have been made to the software or firmware. These updates may include: It does not operate "online" directly within a PLC's memory
Project and Library Support: It is compatible with standard S7 programs (*.s7p) and S7 libraries (*.s7l).