Siemens SINUMERIK 840Di sl Programming Manual page 8

Table of contents
3 Positional Data......................................................................................................................................... 77
3.1 General notes.............................................................................................................................. 77
3.1.1 Program dimensions ................................................................................................................... 77
3.2 Absolute/relative dimensions ...................................................................................................... 78
3.2.1 Absolute dimension (G90, X=AC) ............................................................................................... 78
3.2.2 Incremental dimensions (G91, X=IC).......................................................................................... 82
3.3 Absolute dimension for rotary axes (DC, ACP, ACN)................................................................. 86
3.4 Dimensions inch/metric, (G70/G700, G71/G710) ....................................................................... 88
3.5 Special turning functions ............................................................................................................. 91
3.5.1 Dimensions for radius, diameter in the channel (DIAMON/OF, DIAM90)................................... 91
3.5.2 Position of workpiece .................................................................................................................. 96
3.6 Zero offset frame, (G54 to G57, G505 to G599, G53, G500/SUPA ........................................... 98
3.7 Selection of working plane (G17 to G19) .................................................................................. 104
3.8 Working area limitation in BCS (G25/G26, WALIMON, WALIMOF) ......................................... 108
3.9 Working area limitation in WCS/SZS (WALCS0 ... WALCS10) ................................................ 111
3.10 Reference point approach (G74) .............................................................................................. 114
4 Motion commands ................................................................................................................................. 115
4.1 General notes............................................................................................................................ 115
4.2 Travel commands with polar coordinates, polar angle, polar radius ........................................ 118
4.2.1 Defining the pole (G110, G111, G112) ..................................................................................... 118
4.2.2 Traversing commands with polar coordinates, (G0, G1, G2, G3 AP=..., RP=...) ..................... 121
4.3 Rapid traverse movement (G0, RTLION, RTLIOF) .................................................................. 125
4.4 Linear interpolation (G1) ........................................................................................................... 129
4.5 Circular interpolation types, (G2/G3, CIP, CT).......................................................................... 131
4.6 Circular interpolation with center point and end point (G2/G3, I=, J=, K=AC...) ....................... 135
4.7 Circular interpolation with radius and end point (G2/G3, CR)................................................... 139
4.8 Circular interpolation with arc angle and center point (G2/G3, AR=)........................................ 141
4.9 Circular interpolation with polar coordinates (G2/G3, AP=, RP=)............................................. 143
4.10 Circular interpolation with intermediate and end points (CIP)................................................... 145
4.11 Circular interpolation with tangential transition (CT) ................................................................. 147
4.12 Helical interpolation (G2/G3, TURN=)....................................................................................... 150
4.13 Involute interpolation (INVCW, INVCCW)................................................................................. 155
4.14 Contour definitions .................................................................................................................... 159
4.14.1 Straight line with angle (X2... ANG...) ....................................................................................... 159
4.14.2 Two straight lines (ANG1, X3... Z3... ANG2) ............................................................................ 160
4.14.3 Three straight lines (ANG1, X3... Z3... ANG2, X4... Z4...) ........................................................ 161
4.14.4 End point programming with angle ........................................................................................... 163
4.15 Thread cutting with constant lead (G33) ................................................................................... 164
4.15.1 Programmable run-in and run-out paths (DITS, DITE) ............................................................. 171
4.16 Linear progressive/degressive thread pitch change (G34, G35) .............................................. 173
4.17 Tapping without compensating chuck (G331, G332)................................................................ 175
8
Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
Fundamentals