Multi-channel machining (only 840D sl) 
  9.2 Multi-channel support (only 840D sl) 
Turning 
Operating Manual, 03/2013, 6FC5398-8CP40-3BA1 
573 
 
Parameters  Description  Unit 
Function, rear face   
Zero offset    Zero offset in which the coordinate system, which was shifted according to ZW 
and by ZV as well as mirrored in Z, must be saved: 
•  Basic reference 
•  G54 
•  G55 
•  G56 
•  G57 
•  ... 
 
ZW  Machining position for special axis (abs.); machine coordinate system  mm 
ZV  Offset Z = 0 
Workpiece zero is offset in Z direction (inc, the sign is also evaluated) 
mm 
 
 
Parameters  Description  Unit 
Function, front face   
Zero offset    Zero offset for machining the next front face: 
•  Basic reference 
•  G54 
•  G55 
•  G56 
•  G57 
•  ...