Organization Blocks — TIA Portal's Execution Model
May 18, 2026 — Article 3 of the Studying TIA Portal series. A working engineer's tour of TIA Portal's execution model through Organization Blocks — OB1, OB100, cyclic and hardware interrupts, diagnostic OBs — including a cross-platform comparison of how Siemens, Beckhoff, Codesys, Rockwell, and SIMATIC AX handle the main scan cycle.
