Approach function APPR PLN

Application

With the NC function APPR PLN, the control approaches the contour on a straight line perpendicular to the first contour element.

Coordinates of the first contour point are programmed with polar coordinates.

Requirement

Description of function

This NC function encompasses the following steps:

  • A straight line from the starting point PS to the auxiliary point PH
  • A straight line from the auxiliary point PH to the first contour point PA

Input

11 APPR PLN PR+15 PA-90 LEN+15 RL F300

; Linearly and perpendicularly approach the contour

To navigate to this function:

Insert NC function All functions Path contour APPR APPR PLN

The NC function includes the following syntax elements:

Syntax element

Meaning

APPR PLN

Syntax initiator for a linear approach function perpendicular to the contour

PR

Polar coordinate radius

Entry: absolute or incremental

Optional syntax element

PA

Polar coordinate angle

Entry: absolute or incremental

Optional syntax element

LEN

Distance of the auxiliary point PH to the contour

Entry: absolute or incremental

Optional syntax element

R0, RL, RR

Tool radius compensation

Tool radius compensation

Optional syntax element

F, FMAX, FZ, FU, FAUTO

Feed rate

Feed rate F

Fixed or variable number

Optional syntax element

M

M function

Miscellaneous Functions

Fixed or variable number

Optional syntax element

Note

Example APPR PLN

11 L X-5 Y+25 R0 F300 M3

; Approach PS with R0

12 CC X+50 Y+20

; Set the pole

13 APPR PLN PR+30 PA+180 LEN+10 RL F300

; Approach PA with RL; PH to PA; LEN+10

14 LP PR+30 PA+125

; Complete the first contour element