Do You Really Need OB1?
It’s easy to assume every Siemens PLC project needs an OB1, after all, it’s the first thing TIA Portal gives you. But what actually happens if you delete it?
In this week’s Q&A Weekly, we explore what OB1 really does, how the PLC behaves without it, and why the system can still run perfectly fine even with no main program at all.
🎥 Watch the full episode below, or become a Do & Grow member to access the extended breakdown on task scheduling, scan cycles, and advanced OB structures.
