Siemens SINUMERIK 840D sl Programming Manual page 316

Coordinate transformation (FRAMES)
5.1 Coordinate transformation via frame variables
What is a predefined frame variable?
Predefined frame variables are keywords whose use and effect are already defined in the
control language and that can be processed in the NC program.
Possible frame variable:
● Basic frame (basic offset)
● Settable frames
● Programmable frame
Value assignments and reading the actual values
Frame variable/frame relationship
A coordinate transformation can be activated by assigning the value of a frame to a frame
variable.
Example: $P_PFRAME=CTRANS(X,10)
Frame variable:
$P_PFRAME means: current programmable frame.
Frame:
CTRANS(X,10) means: programmable zero offset of X axis by 10 mm.
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Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
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