Beckhoff First Scan Bit May 2026

Understanding the Beckhoff First Scan Bit: A Comprehensive Guide

VAR
  CycleCount : UDINT := 0;
END_VAR
Pitfall 2: Forgetting Reset After Online Change
If you perform an "Online Change" (modify code without full download), the first scan bit does not trigger. Your initialization code will not run. To force reinitialization, use Reset or Reset Cold from the TwinCAT runtime. beckhoff first scan bit
Declare a global or local variable: bInitialized : BOOL := FALSE; Logic: Understanding the Beckhoff First Scan Bit: A Comprehensive