Siemens SINUMERIK 840D sl Programming Manual page 181

Meaning
RTLIOF:
RTLION:
Note
Preconditions for RTLIOF
To ensure, with RTLIOF non-linear interpolation, the following conditions must be fulfilled:
● No transformation (TRAORI, TRANSMIT, etc.) active.
● G60 active (stop at the block end).
● No compressor active (COMPOF).
● No tool radius compensation active (G40).
● No contour handwheel selected.
● No nibbling active.
If one of these conditions is not met, linear interpolation is as with RTLION.
Example
Program code
...
N30 RTLIOF
N40 G0 X0 Y10
N50 G41 X20 Y20
N60 G40 X30 Y30
N70 RTLION
...
Further information
Reading the current interpolation behavior
The current interpolation behavior can be read via the system variables $AA_G0MODE.
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
G command for switching off the linear interpolation
⇒ In the rapid traversing mode (G0), the non-linear interpolation is active. All of the
path axes reach their end points independently of one another.
Effective: Modal
G command for switching on the linear interpolation
⇒ In the rapid traversing mode (G0), the linear interpolation is active. All of the path
axes reach their end points simultaneously.
Effective: Modal
Comment
; Linear interpolation is the default:
; MD20730 $MC_GO_LINEAR_MODE == TRUE
; Switch off linear interpolation.
; G0 blocks are traversed using non-linear inter-
polation.
; TRC active ⇒ G0 blocks are traversed using lin-
ear interpolation.
; TRC not active ⇒ G0 blocks are traversed using
non-linear interpolation.
; Switch on linear interpolation.
Fundamentals
2.9 Motion commands
181