From Travel Command To Machine Movement; Path Calculation - Siemens Sinumerik 840D sl Programming Manual

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16.3 Path calculation

16.2

From travel command to machine movement

The relationship between the programmed axis movements (travel commands) and the
resulting machine movements is illustrated in the following figure:
16.3 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)
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Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Fundamentals