Siemens SINUMERIK 840D sl Programming Manual page 187

Job planning

Hide thumbs Also See for SINUMERIK 840D sl:

Table of Contents

The example below shows a square with 20 mm side lengths and corners rounded with

G643. The maximum deviations from the exact contour are specified by the machine data

MD 33100: COMPRESS_POS_TOL[...] when a contour is smoothed with G643.

N10 G1 X... Y... Z... F500

The following example shows the difference between both types of motion control. Both

times the default setting FGROUP(X,Y,Z) is active.

N10 G1 X0 A0 F1000 SPATH

N20 POLY PO[X]=(10, 10) A10

N10 G1 X0 F1000 UPATH

N20 POLY PO[X]=(10, 10) A10

In block N20, path S of the FGROUP axes is dependent on the square of curve parameter U.

Therefore, different positions arise for synchronized axis A along the path of X, according to

whether SPATH or UPATH is active:

Job planning

Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0

Special Motion Commands

5.6 Settable path reference (SPATH, UPATH)

;Block-internal corner rounding with

;mm edge length for axes