Message: POU <name> writes to output <name> and is called in several tasks.

Possible error cause: The device setting ‎codegenerator\check-multiple-task-output-write‎ is set and multiple tasks access the same output.

Error correction: Do not call a program that changes outputs in multiple tasks.

Example of the error:

PROGRAM PLC_PRG
VAR
	Output AT %QB7 : BYTE
END_VAR

Output := 0; 


--> C0164: POU 'PLC_PRG' writes to output 'QB7' and is called in several tasks