Beckhoff First Scan Bit Jun 2026

: In industrial settings, a first-scan bit is considered essential for resetting retentive memory and ensuring equipment starts in a safe, predictable state. Alternative for Advanced Users

// First scan detection IF bFirstScan AND NOT bFirstScanDone THEN bFirstScanDone := TRUE; // First scan logic here END_IF beckhoff first scan bit

. At the very end of your main program, set this variable to : In industrial settings, a first-scan bit is

Here’s a concise guide to the in Beckhoff TwinCAT (IEC 61131-3). : In industrial settings

#Beckhoff #TwinCAT #PLCProgramming #Automation #ControlsEngineering #IEC61131

Note: This method is more robust because it relies on the system's own cycle counter rather than a variable you might accidentally overwrite elsewhere. Best Practices

You can easily test it by: