# ID 51081

Channel synchronisation within #OPTIONAL EXECUTION sequence not possible.
Description | When the Skipping program sequences (#OPTIONAL EXECUTION) function is used, the programming of commands that trigger a synchronisation between the decoder and the interpolator, e.g. #FLUSH WAIT, is not allowed when this control unit is active..

The following commands are not allowed within the following programming functions:

#OPTIONAL EXECUTION ON

…

#OPTIONAL EXECUTION OFF

Response | Class | 2 | Abort NC program processing.
Solution | Class | 6 | Check and modify the NC program.
Error type | 1, Error message from NC program.