Siemens SINUMERIK 840D sl Commissioning Manual page 127

Linear axis with encoder on the machine
Figure 10-8
Machine data
Table 10-10 Incremental measuring systems: Machine data
Number Identifier
Axisspecific ($MA_ ... )
30240 ENC_TYPE[n]
30242 ENC_IS_INDEPENDENT[n]
30300 IS_ROT_AX
31000 ENC_IS_LINEAR[n]
31020 ENC_RESOL[n]
31030 LEADSCREW_PITCH
31040 ENC_IS_DIRECT[n]
31050 DRIVE_AX_RATIO_DENOM[n]
31060 DRIVE_AX_RATIO_NUMERA[n]
31070 DRIVE_ENC_RATIO_DENOM[n]
31080 DRIVE_ENC_RATIO_NUMERA[n]
Linear measuring system
The diagram below shows the general possibilities of arranging a linear incremental
measuring system with regard to motor and load, as well as the resulting values for the
respective machine data.
IBN CNC: NCK, PLC, drive
Commissioning Manual, 07/2007, 6FC5397-2AP10-3BA0
Linear axis with encoder on the machine
Name / remarks
Actual value acquisition modes
1=incremental raw signal encoder
Encoder is independent
Rotary axis
Direct measuring system (linear scale)
Encoder pulses per revolution
Leadscrew pitch
Encoder is connected directly to the machine
Denominator load gearbox
Numerator load gearbox
Denominator of resolver gearbox
Numerator of resolver gearbox
NCK start-up
10.5 Parameterize axis data
Reference
R2
127