Siemens SINUMERIK 840DE Programming Manual page 45

Path calculation
The path calculation determines the distance to be traversed in a block, taking into account
all offsets and compensations.
In general:
Distance = setpoint - actual value + zero offset (ZO) + tool offset (TO)
If a new zero offset and a new tool offset are programmed in a new program block, the
following applies:
• With absolute dimensioning:
• With incremental dimensioning:
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Distance = (absolute dimension P2 - absolute dimension P1) + (ZO P2 - ZO P1) + (TO P2
- TO P1).
Distance = incremental dimension + (ZO P2 - ZO P1) + (TO P2 - TO P1).
Fundamental Geometrical Principles
1.5 Coordinate systems and workpiece machining
1-31