Siemens SINUMERIK 840Di Function Manual page 418

Detailed Description
2.3 Setpoint/actual-value system
Linear axis with rotary encoder on motor
Fig. 2-7
In order to adapt the actual-value resolution to the calculation resolution, the control
calculates the quotients from the "internal increments/mm" and the "encoder increments/mm"
as follows:
SINUMERIK example
Linear axis with rotary encoder (2048 pulses) on motor;
internal multiplication (2048)
Gear:
2-44
n
n
Linear axis with rotary encoder on motor
Motor/leadscrew 5
Pitch 10 mm
10000 increments per mm
n
=
Velocities, Setpoint/Actual-Value Systems, Closed-Loop Control (G2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
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