Understanding what the tool can and cannot do is essential for successful automation engineering:
For modern CANopen integration directly within TIA Portal, Siemens recommends hardware solutions like the SIMATIC PN/CAN LINK or the CM CANopen module for S7-1200. These modules allow for seamless communication with CANopen slaves using standardized function blocks provided by HMS Industrial Networks . Best Practices for Use S7 Can Opener - Runmode.com s7 can opener tia portal top
: You need to modify a protected block but no longer have the original unprotected source file. Understanding what the tool can and cannot do
While S7 Can Opener was built for Step 7 "Classic," it intersects with TIA Portal during migration phases. Engineers often use it to unlock legacy blocks before importing them into TIA Portal via a Device Proxy or full project migration. While S7 Can Opener was built for Step
: From version 1.4 onwards, it can lock and unlock User Data Types (UDTs) in addition to standard logic blocks.
: The tool works on project files stored on your hard disk (e.g., the subblk.dbf file in the project folder). It does not operate online in the PLC memory.
: You need to peek into the STL (Statement List) code of a compiled block for troubleshooting.