Beckhoff First Scan Bit !!top!!

The "Beckhoff first scan bit" is not a single feature but a concept implemented through various patterns. For simple projects, a F_TRIG on a TRUE variable is sufficient. For robust, reusable code, use FB_Init in function blocks. For system-wide initialization that must run before cyclic logic, use the INIT section.

// INIT section runs once when program is loaded/started INIT myOutput := FALSE; // Set safe state // Home axes, clear arrays, etc. beckhoff first scan bit