Siemens SINUMERIK 802D

Programming
10.3 Axis movements
Cylindrical grinding
256 Programming and Operating Manual, 07/2009, 6FC5398-4CP10-2BA0
10.3.3 Circular interpolation: G2, G3
Functionality
The tool moves from the starting point to the end point along a circular path. The direction is
determined by the G function:
&ORFNZLVH
*
*
;
&RXQWHUFORFNZLVH
=
Figure 10-12 Definition of the circular direction of rotation G2-G3
The description of the desired circle can be given in various ways:
(QGSRLQW;=
(QGSRLQW;=
;
HJ*;=,.
&HQWHUSRLQW,.
&HQWHUSRLQW,.
6WDUWLQJSRLQW;=
=
(QGSRLQW;=
(QGSRLQW;=
;
HJ*;=&5 
&LUFOHUDGLXV&5
&LUFOHUDGLXV&5
6WDUWLQJSRLQW;=
=
;
HJ*$5,.
&HQWHUSRLQW,.
&HQWHUSRLQW,.
6WDUWLQJSRLQW;=
=
$QJOH$5
$QJOH$5
;
HJ*$5 ;=
(QGSRLQW;=
(QGSRLQW;=
6WDUWLQJSRLQW;=
=
$QJOH$5
$QJOH$5
**DQGFHQWHUSRLQWSDUDPHWHUHQGSRLQW
**DQGUDGLXVSDUDPHWHUHQGSRLQW
**DQGVSHFLILFDWLRQRIDSHUWXUHDQJOH
FHQWHUSRLQW
**DQGVSHFLILFDWLRQRIDSHUWXUHDQJOH
HQGSRLQW
Figure 10-13 Options for circular path programming with G2/G3, with G2 as an example
G2/G3 remains active until canceled by another instruction from this G group (G0, G1, ...).
The path velocity is determined by the programmed F word.