Siemens SINUMERIK 840D sl Programming Manual page 425

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Approach contour

The motion with which the tool is repositioned on the contour can be programmed. Enter

zero for the addresses of the axes to be traversed.

The REPOSA, REPOSQA and REPOSHA commands automatically reposition all axes.

Individual axis names need not be specified.

When the commands REPOSL, REPOSQ and REPOSH are programmed, all geometry axes are

traversed automatically, i.e. they need not be named in the command. All other axes must be

specified in the commands.

The following applies to the REPOSH and REPOSQ circular motions:

The circle is traversed in the specified working planes G17 to G19.

If you specify the third geometry axis (infeed direction) in the approach block, the

repositioning point is approached along a helix in case the tool position and programmed

position in the infeed direction do not coincide.

In the following cases, the control automatically

switches over to linear approach REPOSL:

• You have not specified a value for DISR.

• No defined approach direction is available (program interruption in a block without travel

• With an approach direction that is perpendicular to the current working plane.

Job planning

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

9.9 Repositioning at contour (REPOSA/L, REPOSQ/H, RMI, RMN, RMB, RME)

information).

Path traversing behavior