Siemens SINUMERIK 880 Programming Manual page 99

01.93
Return to the plane effective prior to selection of transformation is also effected automatically
after deselection of transformation.
The transformation is selected by the G functions G133, G233, G333 (2D) or G135, G235,
G335 (3D).
The selection block must not incorporate any traversing movements nor further functions. A
transformation may only be activated from the reset position, i.e. transition to another
transformation is possible only via a preceding deselection block. Deselection is effected by
the deselection block (G130, G230, G330) in AUTOMATIC mode or via the command channel.
A machine data defines whether the transformation is
deselected at RESET or whether the transformation
status is retained. In addition, the machine data defines
a different transformation behaviour on mode change.
Note:
• No fictitious axes can be programmed in initial position (G130, G230, G330) (otherwise
alarm No. 2043 is output).
• A transformation can only be activated from the initial position, i.e. a transition to another
transformation is only possible with a previous selection block.
• If transformation is selected no real axis involved in the transformation can be programmed
(otherwise alarm No. 2043 is output).
• If a real axis of the transformation grouping is switched from follow-up mode to position
control, an automatic reverse conversion of the fictitious coordination is performed.
• If a "feed hold" is applied to a real axis of the transofrmation grouping, it applies to the
whole grouping.
• While the transformation is active, no zero offsets are taken into account for the real axes.
• The function "DRF handwheel" is not possible for fictitious axes.
• The settable angle of rotation must always be zero and the programmable angle of rotation
(G58/G59) must be zero on selection/deselection of the transformation.
• Every selection/deselection of the transformation is associated with the function "empty
buffers" (@714. @714 need not be programmed as it is triggered internally by block
preparation.
• The cutter/tool nose radius compensation must be deselected before activation of the
transformation (because of @714).
• Transformations running parallel in different channels must not access the same axes.
• The transformation must not be selected or deselected within a contour block sequence.
• A block search with calculation to a program part in which the transformation is active is
permitted.
• After selection/deselection of the transformation all axes must be programmed with G90 at
least once if offset values have been included (zero offset, tool offset ...).
• Only one transformation can ever be active in a channel. Only three data records are
possible per channel and per transformation.
© Siemens AG 1991 All Rights Reserved
SINUMERIK 880, (PG)
4.2.11 Coordinate transformation 2D G133, G233, G333/3D G135, G235, G335
6ZB5 410-0HD02
4 Programming of Motion Blocks
4–41