Siemens SINUMERIK 840D sl, Function Manual

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Basic logic functions: Continuouspath Mode, Exact Stop, LookAhead (B1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
3
Table of contents
1 Brief Description ........................................................................................................................................ 5
2 Detailed description ................................................................................................................................... 9
2.1
General ..........................................................................................................................................9
2.1.1 Parameterization of the RESET response.....................................................................................9
2.1.2 Block change and positioning axes ...............................................................................................9
2.1.3 Block change delay........................................................................................................................9
2.2 Exact stop ....................................................................................................................................10
2.3 Continuous-path mode.................................................................................................................15
2.3.1 General ........................................................................................................................................15
2.3.2 Velocity reduction according to overload factor...........................................................................17
2.3.3 Rounding according to path criterion ...........................................................................................19
2.3.4 Rounding with maximum possible dynamic response on each axis............................................27
2.3.5 Smoothing the path velocity.........................................................................................................29
2.3.6 Dynamic response adaptation .....................................................................................................33
2.3.7 Technology G group ....................................................................................................................41
2.4 LookAhead...................................................................................................................................44
2.5 NC block compressor COMPON, COMPCURV, -CAD ...............................................................50
2.6 Combine short spline blocks........................................................................................................53
3 Supplementary conditions ....................................................................................................................... 55
3.1
Rounding and repositioning (REPOS) .........................................................................................55
3.2 Smoothing the path velocity.........................................................................................................57
4 Examples................................................................................................................................................. 59
4.1
Example of jerk limitation on the path..........................................................................................59
5 Data lists.................................................................................................................................................. 61
5.1
Machine data................................................................................................................................61
5.1.1 General machine data..................................................................................................................61
5.1.2 Channelspecific machine data.....................................................................................................61
5.1.3 Axis/spindlespecific machine data ...............................................................................................62
5.2 Setting data..................................................................................................................................63
5.2.1 Channelspecific setting data........................................................................................................63
5.3 Signals .........................................................................................................................................63
5.3.1 Signals from channel ...................................................................................................................63
5.3.2 Signals to axis/spindle .................................................................................................................63
Index........................................................................................................................................................ 65