3 Directions of Movements, Dimensioning 05.91
3.6 Path calculation
3.6 Path calculation
The path calculation determines the distance to be travelled within a block, taking all offsets
and compensations into consideration.
The formula is generally as follows:
Path = setpoint - actual value + zero offset (ZO) + tool offset (TO).
Path calculation using absolute position data input
Reference dimension (set value) for P2
Zero offset
P2
Zero offset
P1
Machine
zero
Movement
Workpiece
zero
Path
P2
P1
Actual value 2
Actual value 1
TO P2
Reference
dimension
(set value)
for P1
TO P1
If incremental position data input is used, the zero offset is incorporated normally in the first
block.
Path = incremental position data + ZO + TO
If a new zero offset and a new tool offset are programmed in a new program block, the formula
is as follows:
With absolute position data input
Path = absolute position data P2 - absolute position data P1 + ZOP2 - ZOP1 +TOP2 -
TOP1
With incremental position data input
Path = incremental position data + ZOP2 - ZOP1 +TOP2 - TOP1.
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SINUMERIK 880, (PG)