Siemens SINUMERIK 840D sl Function Manual page 177

Proceed as follows
• Set the machine data for all axes with a large value to begin with:
MD37120 $MA_GANTRY_POS_TOL_ERROR (gantry trip limit)
• Set a very small value in the machine data:
MD37110 $MA_GANTRY_POS_TOL_WARNING (gantry warning limit)
When you put a heavy, dynamic strain on the axes, always be careful to re-enter the self-
canceling alarm "10652 channel %1 axis %2 gantry warning limit exceeded".
• Now increase the following machine data:
MD37110 $MA_GANTRY_POS_TOL_WARNING (gantry warning limit)
Do this until the alarm no longer appears. The interface indicates the status specified
below. (That must occur in the appropriate window, according to production.)
In case the monitoring still only chimes very sporadically, one can program a centering maker
into the PLC user program.
Enter the value calculated for the warning limit + a small safety provision in the following
machine data:
MD37120 $MA_GANTRY_POS_TOL_ERROR (gantry trip limit)
Error limit values
Values are entered in the following machine data:
MD37110 $MA_GANTRY_POS_TOL_WARNING (gantry warning limit)
MD37120 $MA_GANTRY_POS_TOL_ERROR (gantry trip limit)
MD37130 $MA_GANTRY_POS_TOL_REF (gantry trip limit for referencing)
These should have the following scales of magnitude at the end of the customizing process:
Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
G1: Gantry axes
2.7 Examples
177