Siemens SINUMERIK 840Di Function Manual page 1727

Approach movement
A maximum of 4 sub-movements:
• Start point of the movement P
• Intermediate points P
• End point P
Points P
according to the parameters defined and the geometrical conditions.
Retraction movement
On retraction, the points are traversed in the reverse direction, i.e., starting at P
at P
Parameters
The response of the smooth approach and retraction function is determined by up to 9
parameters:
• Non-modal G code for defining the approach and retraction contour
Fig. 2-19
Tool Compensation (W1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
, P
1
4
, P and P are always defined. Intermediate points P
0 3 4
.
0
This G code cannot be omitted.
– G147: Approach with a straight line
– G148: Retraction with a straight line
– G247: Approach with a quadrant
– G248: Retraction with a quadrant
– G347: Approach with a semicircle
– G348: Retraction with a semicircle
Approach behavior depending on G147 to G347 and DISR (with simultaneous activation
of tool radius compensation)
2.4 Tool: Tool radius compensation 2D (TRC)
0
and P
2 3
Detailed Description
and P can be omitted,
1 2
and ending
4
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