# ID 22009

It is not allowed to write asynchronous variables in an RT cycle.
Description | A write access to asynchronous variables is not permissible in the real-time cycle. Only synchronous variables may be written within a real-time cycle. #RT CYCLE [ID=4711 SCOPE = GLOBAL] V.E.Count = 2 ( asynchronous V.E. variable) #RT CYCLE END
Response | Class | 2 | Abort NC program processing.
Solution | Class | 3 | Check and modify P-EXTV-00005 of the affected variable in the list of external variables.
Error type | 1, Error message from NC program.