By leveraging the robust and standardized method involving the GETCURTASKINDEX function block and the _TaskInfo system array, developers can create highly maintainable and transparent initialization logic. Whether you are using Structured Text, Ladder Diagram, or any other IEC 61131-3 language, the ability to trap the very first scan cycle is universally available.
Understanding the Beckhoff First Scan Bit: Implementation, Use Cases, and Best Practices beckhoff first scan bit
By checking if the current task cycle count equals 1 , you can identify the first scan globally. By leveraging the robust and standardized method involving