Siemens SINUMERIK 828D

G2: Velocities, setpoint / actual value systems, closed-loop control
7.4 Setpoint/actual-value system
Basic Functions
366 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Variants of actual-value acquisition
The relevant machine data and relational calculations for the different methods of actual-value acquisition are
described in the following.
7.4.6 Adjustments to actual-value resolution
Calculating the ratio
The calculation of the ratio is obtained from the associated machine data and is defined for encoders as follows:
For encoders with rotary axis, the following applies:
The internal pulse multiplication is defined by MD31025 $MA_ENC_PULSE_MULT.
NewConfig-dependent machine data
Additional machine data without index Meaning
MD31064 $MA_DRIVE_AX_RATIO2_DENOM Intermediate gear denominator
MD31066 $MA_DRIVE_AX_RATIO2_NUMERA Intermediate gear numerator
MD32000 $MA_MAX_AX_VELO Maximum axis velocity
Note
These machine data can be activated in parts programs with the command NEWCONF or via
the HMI operator panel using a soft key.
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