HEIDENHAIN MANUALplus 620 Technical Manual page 1735

8.32 Canceling a Submit Program (CAN)
January 2012
Syntax: CAN (CANCEL)
Operands: B/W
Action:
Cancel a submit program with the specified identifier during processing, or
remove it from the queue. You must have already stored the identifier in a byte
or word when you call the submit program. After you have canceled the
program, the control immediately starts the next submit program from the
queue. The following PLC modules cannot be canceled at just any location
with CANCEL:
PLC module for access to screen (908X)
PLC module for reading NC files (909X)
For these modules, you must check with the RPLY command whether the
CAN command may be executed.
8.32 Canceling a Submit Program (CAN) 1735