Commissioning; Backlash - Siemens SINUMERIK 840D sl Function Manual

Display
The compensation value associated with the actual position is output as the total
compensation calculated from "LEC" and "backlash compensation" in the "Service axes"
display in the "Diagnosis" operating area.
5.3.2

Commissioning

5.3.2.1

Backlash

MD32450
The correction value for the backlash compensation is entered into the machine data for
each axis/spindle:
MD32450 $MA_BACKLASH (backlash)
For positive backlash (normal case), the compensation value should be entered as a positive
value and for a negative backlash, as negative value.
2nd measuring system
If there is a 2nd measuring system for the axis/spindle, a backlash compensation must be
entered for this too. As the second measuring system is mounted in a different way from the
first measuring system, the backlash can be different from that of the first measuring system.
When the measuring system is switched over the associated compensation value is always
automatically activated.
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
K3: Compensation
5.3 Backlash compensation
353