Efficient Networks Siemens Sinamics S120 - Manual (Page 207)

Basic functions
6.14 Position tracking
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
207
6.14 Position tracking
6.14.1 General Information
Terminology
● Encoder range
The encoder range is the position area that can itself represent the absolute encoder.
● Singleturn encoder
A singleturn encoder is a rotating absolute encoder, which provides an absolute image of
the position inside an encoder rotation.
● Multiturn encoder
A multiturn encoder is an absolute encoder that provides an absolute image of several
encoder revolutions (e.g. 4096 revolutions).
Description
Position tracking enables reproduction of the position of the load when gears are used. It can
also be used to extend the position area.
With position tracking, an additional measuring gear can be monitored and also a load gear,
if the "position control" function module (p0108.3 = 1) is active. Position tracking of the load
gear is described under "Function modules" -> "Position control" -> Actual position value
conditioning.
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Figure 6-10 Overview of gears and encoders