Siemens SINUMERIK 840D sl Programming Manual page 311

Parameters
TRANSMIT
PTPG0
PTP
STAT=
TU=
Example of circumnavigation of the pole with PTP and TRANSMIT
N001 G0 X30 Z0 F10000 T1 D1 G90
N002 SPOS=0
N003 TRANSMIT
N010 PTPG0
N020 G0 X30 Y20
N030 X-30 Y-20
N120 G1 X30 Y20
N110 X30 Y0
M30
Job planning
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
Activates the first declared TRANSMIT function
(see section "Milling on turned parts: TRANSMIT")
Point to Point G0 (point-to-point motion automatic at each G0 block and
then set CP again)
Because STAT and TU are modal, the most recently programmed value
always acts.
point to point (point to point motion)
For TRANSMIT, PTP means that in the Cartesian spirals will be retracted
to Archimedean spirals either about the pole or from the pole. The
resulting tool motions run significantly different as for CP and are
represented in the associated programming examples.
Resolving the non-uniqueness with regard to the pole.
TU is not relevant for PTP with TRANSMIT
Transformations
7.9 Cartesian PTP travel
;Initial setting absolute
;dimension
;TRANSMIT transformation
;Automatic for each G0 block
;PTP and then CP again
7-73