[roberton26]

Hello guys

Is there any different variable to get the real turning speed of the spindle ?

When I have tried to get the real turning speed by #4119 If I have programed some value using the "S" constant the value that I have got in this variable #4119 It is not the real turning speed.
Thanks in advance


Any help would be very appreciate

[sinha_nsit]

It only gives the value specified with S-word.
If using CSS, knowing the RPM is not very meaningful, as it continuously varies.
If still you need to know the RPM at a certain X, you would have to calculate it, based on CSS and X.

[roberton26]

HI Shina

I could not answer before

How can I to get the CSS value?


As you have said the #4119 only give the S-word and I need to get an approximate value of the spindle speed.

Thanks for your answer Shina

[sinha_nsit]

Approx formulas:
rpm = 300 * V / D in metric. V in m/min and D in mm.
rpm = 4 * V / D in imperial. V in feet/min and D in inches.

V is the specified CSS and D is the X value where you want to calculate the rpm.