ACU-RITE MILLPWR G2, Technical Manual

Page: 269 / 546

5.5 Encoders 269
5.5.2 Distance-Coded Reference Marks
The parameter object CfgAxisHardware is not required for:

Virtual axes (MP_axisMode=Virtual)
HEIDENHAIN offers linear encoders with distance-coded reference marks.
The nominal increment between two fixed reference marks depends on the
encoder being used.
 For encoders with distance-coded reference marks, enter for each axis the
nominal increment between two fixed reference marks in
MP_posEncoderRefDist.
 For encoders with reverse-distance-coded reference marks, enter a nega-
tive value into
MP_posEncoderRefDist (i.e. SENC 150).
Example:
SENC 150: Incremental linear encoder with reverse-distance-coded reference
marks Grating period 1 µm (one signal period covers 0.004 mm), nominal
increment between reference marks is 20 mm.
MP_posEncoderDist = 0.004
MP_posEncoderIncr = 1
MP_encoderRefDist = =-5000 [signal periods]
MP_posEncoderRefDist
Nominal distance between two fixed reference marks
Format: Numeric value
Input: -65535 to 65535 [signal periods
Default: 1000 [signal periods]
Settings in the configuration editor:
Axes
ParameterSets
Key for parameter set
CfgAxisHardware
posEncoderRefDist
20 mm
0.004 mm
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