G92

Lloyd wrote: "What can their simulation software do that
www.cncsimulator.com cannot?"

I posted a query on G92 at Mike's forum www.cncci.com but Mike is
heavily into FANUC. The crowd here is exposed to a much wider range
of controllers. I hope to hear what the enlighted crowd here thinks
of www.cncsimulator.com interpretation of G92:

This is relating to the sample part program I obtained the software
CNCSimulator which can be downloaded for free from
www.cncsimulator.com. The file in consideration is _sample11.nc in
the Mill folder which shows a simulation for machining the profiles
of 2 half bottle separated from each other by a distance in x. The
first bottle is machined and the sequence end at N1530 at which point
the X coordinate is X-17.5

At sequence N1540 (sequence no added for reference) the program zero
is shifted by a G92 command (G92 X110). According to your notes, this
should mean that after N1540, the NEW program zero will be 100 units
TO THE LEFT of current tool position in the ASCII diagram below. So
the next move N1550 X-11.5 should send the tool 115.5 units TO THE
LEFT.

Instead, the simulation at sequence N1550 shows the tool going ~90
units to the right as shown in the ASCII diagram below. If the
simulation is correct, the meaning of N1540 G92 X110 is setting the
NEW program zero 110 units to the right of the position at N1520,
that is putting the new coord. as -110 when G92 is invoked.

N1520 G02 X-17.5 Y10 I0 J9.5
N1530 G00 Z5

N1540 G92 X110 T1 (dia 10mm)
N1550 G01 Y127 X-11.5


+Z
|
|
|
|
|
|
|
|
|__X___________________X____________________\ +X
--17.5...0.........-11.5.........0
...N1520............N1550 NEW PROGRAM ZERO ?????
current tool
..position


Peter