Siemens Sinamics S110 Function Manual page 208

Drive functions
7.3 Function modules
Figure 7-40
The link between the physical variables and the neutral length unit LU is established via
parameter p2506 (LU per load revolution) for rotary encoders. Parameter p2506 mirrors,
together with p2504, p2505, the interrelationship between encoder increments and the
neutral position unit LU.
Example:
Rotary encoder, ball screw with a pitch of 10 mm/revolution. 10 mm should have a resolution
of 1 µm (i.e. 1 LU = 1 µm).
-> One load revolution corresponds to 10000 LU
-> p2506 = 10000
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 may be being used
(p0432, p0433).
208
Position actual value sensing with rotary encoders
Function Manual, 10/2008, 6SL3097-4AB10-0BP0
Drive functions