Siemens SINAMICS G120 List Manual page 87

For linear axes, the following applies:
p0411.0 = 1:
This parameter is pre-assigned with p0421, expanded by 6 bits for multiturn information (maximum number of
overflows) and cannot be changed.
p0411.3 = 1:
The parameter value is pre-set to the highest possible value. The highest possible value depends on the pulse
number (p0408) and the fine resolution (p0419).
p0413[0...n] Measuring gear position tracking tolerance window / Pos track window
Access level: 3
Can be changed: C(4)
Unit group: -
Min
0.00
Description: Sets a tolerance window for position tracking.
After the system is switched on, the difference between the saved position and the actual position is determined, and
depending on this, the following is initiated:
Difference within the tolerance window --> The position is reproduced as a result of the encoder actual value.
Difference outside the tolerance window --> An appropriate message is output.
Dependency: Refer to: F31501, F32501
Caution: Rotation, e.g. through a complete encoder range is not detected.
Note: The value is entered in integer (complete) encoder pulses.
For p0411.0 = 1, the value is automatically pre-assigned quarter of the encoder range.
Example:
Quarter of the encoder range = (p0408 * p0421) / 4
It is possible that the tolerance window may not be able to be precisely set due to the data type (floating point number
with 23 bit mantissa).
p0418[0...n] Fine resolution Gx_XIST1 (in bits) / Enc fine Gx_XIST1
Access level: 3
Can be changed: C(4)
Unit group: -
Min
2
Description: Sets the fine resolution in bits of the incremental position actual values.
Note: The parameter applies for the following process data:
- Gx_XIST1
- Gx_XIST2 for reference mark or flying measurement
The fine resolution specifies the fraction between encoder pulses. Depending on the physical measurement principle,
an encoder pulse can be broken down into a different number of fractions (e.g. squarewave encoder: 2 bit =
resolution 4, sin/cos encoder: Typical 11 bit = resolution 2048).
For a squarewave encoder, with the factory setting, the least significant bits have the value zero, i.e. they do not
supply any useful information.
For especially high quality measuring systems, the fine resolution must be increased corresponding to the available
accuracy.
p0419[0...n] Fine resolution absolute value Gx_XIST2 (in bits) / Enc fine Gx_XIST2
Access level: 3
Can be changed: C(4)
Unit group: -
Min
2
Description: Sets the fine resolution in bits of the absolute position actual values.
Dependency: Refer to: p0418
SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890
Calculated: -
Scaling: -
Unit selection: -
Max
4294967300.00
Calculated: -
Scaling: -
Unit selection: -
Max
18
Calculated: -
Scaling: -
Unit selection: -
Max
18
2 Parameters
2.2 List of parameters
Data type: FloatingPoint32
Dyn. index: EDS, p0140
Func. diagram: -
Factory setting
0.00
Data type: Unsigned8
Dyn. index: EDS, p0140
Func. diagram: 4010, 4704
Factory setting
11
Data type: Unsigned8
Dyn. index: EDS, p0140
Func. diagram: 4704, 4710
Factory setting
9
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