For high-level languages like SCL or CFC , the tool provides the unlocked block in plain STL (Statement List) code rather than restoring the original high-level source text.
is a specialized utility designed to manage and remove the KNOW_HOW_PROTECT attribute from Siemens SIMATIC S7-300 and S7-400 program blocks. Simatic S7 Can Opener V1.31 33
The tool cannot remove CPU passwords or defeat online access protection; it only works with local project files. For high-level languages like SCL or CFC ,
Industrial programmers often encounter "locked" blocks in SIMATIC Manager (STEP 7) projects where the original source code is unavailable, making troubleshooting or legacy updates nearly impossible. This tool addresses those specific barriers by operating directly on project files stored on a hard disk. Key Features of Simatic S7 Can Opener Practical Use Cases It is important to understand
If the original compiled block included internal comments, these remain readable after the block is unlocked. Practical Use Cases
It is important to understand what the S7 Can Opener do: