Here’s a complete, ready-to-use post explaining the Beckhoff First Scan Bit in TwinCAT PLC.
It automatically resets to FALSE after that first scan.
(* Logic Section )
IF bFirstScan THEN
( --- This runs ONLY on the first scan --- )
nCounter := 0; ( Reset variables )
( Perform other startup routines *)
The most straightforward way is to declare a global variable that resets itself after the first cycle.
Beckhoff First Scan Bit 100%
Here’s a complete, ready-to-use post explaining the Beckhoff First Scan Bit in TwinCAT PLC.
It automatically resets to FALSE after that first scan. beckhoff first scan bit
(* Logic Section )
IF bFirstScan THEN
( --- This runs ONLY on the first scan --- )
nCounter := 0; ( Reset variables )
( Perform other startup routines *) Here’s a complete
The most straightforward way is to declare a global variable that resets itself after the first cycle. beckhoff first scan bit