Siemens sinumerik 840D sl Function Manual page 154

Detailed description
2.3 Start-up of gantry axes
Axis traversing direction
As part of the start-up procedure, a check must be made to ensure that the direction of
rotation of the motor corresponds to the desired traversing direction of the axis. Correct by
means of axial machine data:
MD32100 $MA_AX_MOTION_DIR (travel direction).
Activation of the axis grouping
MD37100 $MA_GANTRY_AXIS_TYPE (gantry axis definition)
This machine data is determined for the following gantry axis:
• To which gantry grouping (1, 2 or 3) the axis must be assigned,
• Whether it is to act as the leading axis (single-decade MD value only) or as a
Note
Please make sure that a gantry grouping specified as cross-channel or cross-NCU does
not clash with gantry grouping numbers already assigned. In this case the gantry
grouping numbers must be clearly assigned cross-channel and cross-NCU. If this is not
the case, alarm 10651 is output with reason 40XX. XX is the gantry grouping causing the
clash.
For start-up purposes, all axes in a gantry grouping must be declared either as linear axes or
as rotary axes:
MD30300 $MA_IS_ROT_AX (rotary axis/spindle)
Table 2-1
MD37100 $MA_GANTRY_AXIS_TYPE
0
1
11
2
12
3
13
...
8
18
22
synchronized axis.
Examples for defining the gantry axis grouping
Gantry axis
None
Leading axis
Synchronized axis
Leading axis
Synchronized axis
Leading axis
Synchronized axis
Leading axis
Synchronized axis
Special functions: Gantry Axes (G1)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
Gantry grouping
-
1
1
2
2
3
3
8
8