Siemens SINAMICS G120D List Manual page 78

Parameters
List of parameters
p0418[0...n] Fine resolution Gx_XIST1 (in bits) / Enc fine Gx_XIST1
Access level: 3
Can be changed: C(4)
Units 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 two 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
CU250D-2_DP_F Access level: 3
CU250D-2_PN_F
Can be changed: C(4)
Units group: -
Min
2
Description: Sets the fine resolution in bits of the absolute position actual values.
Dependency: Refer to: p0418
Note: This parameter applies to process data Gx_XIST2 when reading the absolute value.
p0421[0...n] Absolute encoder rotary multiturn resolution / Enc abs multiturn
CU250D-2_DP_F Access level: 3
CU250D-2_PN_F
Can be changed: C(4)
Units group: -
Min
0
Description: Sets the number of rotations that can be resolved for a rotary absolute encoder.
Caution: This parameter is automatically pre-set for encoders from the encoder list (p0400). When selecting a catalog
encoder, this parameter cannot be changed (write protection). Information in p0400 should be carefully observed
when removing write protection.
p0422[0...n] Absolute encoder linear measuring step resolution / Enc abs meas step
CU250D-2_DP_F Access level: 3
CU250D-2_PN_F
Can be changed: C(4)
Units group: -
Min
0 [nm]
Description: Sets the resolution of the absolute position for a linear absolute encoder.
Caution: This parameter is automatically pre-set for encoders from the encoder list (p0400). When selecting a catalog
encoder, this parameter cannot be changed (write protection). Information in p0400 should be carefully observed
when removing write protection.
Note: The serial protocol of an absolute encoder provides the position with a certain resolution , e.g. 100 nm. This value
must be entered here.
1-78
Calculated: -
Scaling: -
Unit selection: -
Max
18
Calculated: -
Scaling: -
Unit selection: -
Max
18
Calculated: -
Scaling: -
Unit selection: -
Max
65535
Calculated: -
Scaling: -
Unit selection: -
Max
4294967295 [nm]
© Siemens AG 2012 - 2013 All Rights Reserved
SINAMICS G120D List Manual (LH14), 01/2013
Data type: Unsigned8
Dyn. index: EDS
Func. diagram: 4010, 4704
Factory setting
2
Data type: Unsigned8
Dyn. index: EDS, p0140
Func. diagram: 4704, 4710
Factory setting
2
Data type: Unsigned16
Dyn. index: EDS, p0140
Func. diagram: 4704
Factory setting
4096
Data type: Unsigned32
Dyn. index: EDS
Func. diagram: 4704
Factory setting
100 [nm]