Siemens SINAMICS S120 Function Manual page 239

Note
The effective actual value resolution is obtained from the product of the encoder pulses
(p0408) and the fine resolution (p0418) and a measuring gear that is possibly being used
(p0402, p0432, p0433).
Figure 7-8
For linear encoders, the interrelationship between the physical quantity and the neutral
length unit LU is configured using parameter p2503 (LU/10 mm).
Example:
Linear encoder, 10 mm should have a resolution of 1 µm (i.e. 1 LU = 1 µm).
-> p2503 = 10000
Figure 7-9
A correction can be made using connector input p2513 (correction value, position actual
value conditioning) and a positive edge at binector input p2512 (activates the correction
value). When the "basic positioning" function module is activated, p2513 is automatically
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Position actual value sensing with linear encoders
Actual position value preparation
Function modules
7.8 Closed-loop position control
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