Siemens SINUMERIK 828D Function Manual page 365

Coding of the machine data
The indices of the following machine data are coded at the encoder [Encoder no.]:
Encoder 0 or 1
Encoder-dependent machine data
MD31070 $MA_DRIVE_ENC_RATIO_DENOM[n]
MD31080 $MA_DRIVE_ENC_RATIO_NUMERA[n]
MD31000 $MA_ENC_IS_LINEAR[n]
MD31010 $MA_ENC_GRID_POINT_DIST[n]
MD31020 $MA_ENC_RESOL[n]
MD31040 $MA_ENC_IS_DIRECT[n]
MD34320 $MA_ENC_INVERS[n]
Additional machine data without index
MD30200 $MA_NUM_ENCS
MD30300 $MA_IS_ROT_AX
MD31030 $MA_LEADSCREW_PITCH
Index [n] of the following machine data depend on the servo parameter sets of the position controller, with which
the actual-value resolution is calculated automatically in the control:
MD DRIVE_AX_...[servo parameter set no.] : 0-5
Parameter-set-dependent machine data
MD31050 $MA_DRIVE_AX_RATIO_DENOM[n]
MD31060 $MA_DRIVE_AX_RATIO_NUMERA[n]
For the following machine data, the control does not consider any parameter set nor any indices for coded
encoders.
NewConfig-dependent machine data
Encoder-dependent machine data
MD31044 $MA_ENC_IS_DIRECT2[n]
MD34080 $MA_REFP_MOVE_DIST [n]
MD34090 $MA_REFP_MOVE_DIST_CORR[n]
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
G2: Velocities, setpoint / actual value systems, closed-loop control
Meaning
Measuring gear denominator
Measuring gear numerator
Direct measuring system linear scale
Distance between reference marks on
linear scales
Encoder pulses per revolution
for rotary encoder
Encoder is connected directly at the
machine
Length measuring system is in the opposite
sense
Meaning
Number of encoders
Rotary axis
Leadscrew pitch
Meaning
Denominator load gearbox
Numerator load gearbox
Meaning
Encoder on intermediate gear
Reference point approach distance
Reference point offset
7.4 Setpoint/actual-value system
365