Machining Options For Transmit - Siemens SINUMERIK 840D sl Function Manual

M1: Kinematic transformation
7.2 TRANSMIT (option)
In AUTOMATIC mode
The velocity-optimized velocity planning function remains active for as long as the axes
relevant to the transformation are traversed in mutual synchronism as path axes. If an axis
involved in the transformation is traversed as a positioning axis, the online velocity check
remains active until the transformation is deactivated or until all axes involved in the
transformation are operating as path axes again. The return to velocity-optimized operation
automatically initiates a STOPRE and synchronizes acyclic block pre-processing with the
interpolation routine.
From start to reset
If parts program processing is aborted with RESET and restarted with START, then the
following must be noted:
● The remaining parts program is traversed reproducibly only if all axes are traversed to a
Power On, RESET
System response after Power On is determined by the settings stored in the following
machine data:
MD20110 $MC_RESET_MODE_MASK and
MD20140 $MC_RAFO_RESET_VALUE
References:
/FB1/ Function Manual Basic Functions; "Workpiece-related Actual Value System" (K2).
Reference point approach
Axes cannot be referenced when a transformation is active. Any active transformation is
deselected by the control system during a referencing operation.
7.2.6

Machining options for TRANSMIT

Introduction
The transformation TRANSMIT has a pole at the zero point of the TRANSMIT plane (example,
see figure: 2–1, x = 0, Y = 0). The pole is located on the intersection between the radial
linear axis and the rotary axis (X and CM). In the vicinity of the pole, small positional
changes in the geometry axes generally result in large changes in position in the machine
rotary axis. The only exceptions are linear motions into or through the pole.
A tool center point path through the pole does not cause the parts program to be aborted.
There are no restrictions with respect to programmable traversing commands or active tool
radius compensations. Nevertheless, workpiece machining operations close to the pole are
not recommended since these may require sharp feedrate reductions to prevent overloading
of the rotary axis.
514
defined position by means of a linear block (G0 or G1) at the beginning of the parts
program. A tool which was active on RESET may no longer be taken into account by the
control (settable via machine data).
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions