Siemens SINUMERIK 808D Parameter Manual page 279

Manipulating this MD normally causes automatic absolute encoder maladjustment (MD34200
$MA_ENC_REFP_MODE returns to "0").
34300 ENC_REFP_MARKER_DIST
mm, degrees Basic distance of reference marks of distance-coded encoders.
-
808d-me42 1
808d-me62 1
808d-te42 1
808d-te62 1
808d-mte40 1
808d-mte60 1
Description:
In addition to the incremental encoder track, a further encoder track is available
with distance-coded measuring systems for determining the absolute encoder position.
This encoder track has reference marks at defined, different distances. The basic
distance between the fixed reference marks (which are the reference marks that are
always the same distance from one another) can be taken from the data sheet, and
directly transferred into machine data MD34300 $MA_ENC_REFP_MARKER_DIST.
With the basic distance between the fixed reference marks (MD34300
$MA_ENC_REFP_MARKER_DIST), the distance between two reference marks (MD34310
$MA_ENC_MARKER_INC), and the number of encoder marks (MD31020 $MA_ENC_RESOL) on
angular measuring systems or the graduation cycle (MD31010 $MA_ENC_GRID_POINT_DIST) on
linear measuring systems, the absolute encoder position can be determined once two
successive reference marks have been crossed.
MD34300 $MA_ENC_REFP_MARKER_DIST is also used for a plausibility check of reference
mark distances.
Examples of application:
For example: Heidenhain LS186 C
MD 31010 =
MD 34300 = 20.00mm (basic distance between the reference marks)
MD 34310 =
cycle).
34310 ENC_MARKER_INC
mm, degrees Interval between two reference marks for distance-coded scales
-
808d-me42 1
808d-me62 1
808d-te42 1
808d-te62 1
808d-mte40 1
808d-mte60 1
Description:
The distances between two reference marks are defined variably, so that the position
of the crossed reference marks can be determined accurately in linear measuring
systems with distance-coded reference marks.
The difference between two reference mark distances is entered in MD34310
$MA_ENC_MARKER_INC.
MD irrelevant for:
Incremental measuring systems
Special cases:
Parameter Manual
List Manual, 01/2017
10.0, 10.0 0.0
10.0, 10.0 0.0
10.0, 10.0 0.0
10.0, 10.0 0.0
10.0, 10.0 0.0
10.0, 10.0 0.0
0.02mm (graduation cycle)
0.02mm (distance between two reference marks corresponds to one graduation
0.02, 0.02 0.0
0.02, 0.02 0.0
0.02, 0.02 0.0
0.02, 0.02 0.0
0.02, 0.02 0.0
0.02, 0.02 0.0
3.4 Axis-specific machine data
A03, A02 R1
DOUBLE PowerOn
- ReadOnly
- ReadOnly
- ReadOnly
- ReadOnly
- 7/2
- 7/2
A03, A02 R1
DOUBLE Reset
- ReadOnly
- ReadOnly
- ReadOnly
- ReadOnly
- 7/2
- 7/2
Machine data
M
M
M
M
M
M
M
M
M
M
M
M
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