Siemens SIMATIC FC 45 Function Manual page 119

Terminating a command with Cancel
BZ and QZ are not reset with Cancel.
Figure B-5
FC 45
Function manual, Release 03/2006 , J31069-D0167-U001-A2-7618
B.2 Cyclic Control Word between Master and MOBY-ASM
Cancel timing
Programming the MOBY-ASM on PROFIBUS
B-7