Working Area Limitations - Siemens SINUMERIK 840D sl Function Manual

M1: Kinematic transformation
7.1 TRANSMIT face end transformation (option)
MD24951 $MC_TRANSMIT_POLE_SIDE_FIX_2 = 1
machining is done before the rotational center point (linear axis in positive traversing range),
for
MD24911 $MC_TRANSMIT_POLE_SIDE_FIX_1 = 2
or
MD24951 $MC_TRANSMIT_POLE_SIDE_FIX_2 = 2
behind the rotational center point (linear axis in negative traversing range).
Transformation selection outside pole
The control system moves the axes involved in the transformation without evaluating machine
data MD24911 $MC_TRANSMIT_POLE_SIDE_FIX_<t>. In this case, <t> = 1 stands for the
first and <t> = 2 for the second TRANSMIT transformation in the channel.
7.1.1.3

Working area limitations

Initial situation
When TRANSMIT is active, the pole is replaced by a working area limitation if the tool center
point cannot be positioned at the turning center of the rotary axis involved in the transformation.
This is the case when the axis perpendicular to the rotary axis (allowing for tool offset) is not
positioned on the same radial plane as the rotary axis or if both axes are positioned mutually
at an oblique angle. The distance between the two axes defines a cylindrical space in the BCS
in which the tool cannot be positioned.
The illegal range cannot be protected by the software limit switch monitoring function since
the traversing range of the machine axes is not affected.
Figure 7-5
394
Working area limitation based on offset linear axis
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions