Overlaid Motions With Transmit - Siemens SINUMERIK 840DE sl Function Manual

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Figure 2-5
Traverse into working area limitation
Any motion that leads into the working area limitation is rejected with alarm 21619. Any
corresponding parts program block is not processed. The control system stops processing at
the end of the preceding block.
If the motion cannot be foreseen promptly enough (JOG modes, positioning axes), then the
control stops at the edge of the working area limitation.
Response close to working area limitation
If a tool center point traverses past the prohibited range, the control system automatically
reduces the feedrate and path acceleration rate such that the settings in the machine axes
(MD32000 $MA_MAX_AX_VELO[AX*] and MD32300 $MA_ MAX_AX_ACCEL[AX*]) are not
exceeded. The closer the path is to the working area limitation, the greater the reduction in the
feedrate may be.
2.1.1.4

Overlaid motions with TRANSMIT

The control system cannot predict overlaid motions. However, these do not interfere with the
function provided that they are very small (e.g. fine tool offset) in relation to the current distance
from the pole (or from working area limitation). With respect to axes that are relevant for the
transformation, the transformation monitors the overlaid motion and signals any critical quantity
by alarm 21618. This alarm indicates that the block-related velocity planning function no longer
adequately corresponds to the actual conditions on the machine. When the alarm is output, the
conventional, non-optimized online velocity monitor is therefore activated. The preprocessing
routine is re-synchronized with the main run by a REORG generated internally in the control.
Alarm 21618 should be avoided whenever possible since it indicates a state that can lead to
axis overload and thus abortion of parts program processing.
Transformations
Function Manual, 06/2019, A5E47435470B AA
Unmachinable cylinder - working area limitation
Axis distance
Working area limitation based on offset linear axis
M1: Kinematics transformation
2.1 TRANSMIT face end transformation (option)
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