Siemens SINUMERIK 840D sl Programming Manual page 325

Description
You can program several arithmetic rules in succession.
Example:
$P_PFRAME=CTRANS(...):CROT(...):CSCALE...
Please note that the commands must be connected by the colon chain operator: (...):(...).
This causes the commands firstly to be linked and secondly to be executed additively in the
programmed sequence.
Note
The values programmed with the above commands are assigned to the frames and stored.
The values are not activated until they are assigned to the frame of an active frame variable
$P_BFRAME or $P_PFRAME .
Job Planning
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
Coordinate transformation (FRAMES)
5.2 Frame variables/assigning values to frames
325