FANUC Oi-MC

[BKCOM]

Dear All.
I'm setting up new vertical machining center use fanuc OiMC controller.
I have problem with spindle speed because I use the belt drive, the gear ratio is 1: 1.25 it mean that when motor speed is 1000rpm then spindle speed is 1250rpm
- Motor teeth is 5.
- Spindle teeth is 4.
I set parameter 4171 to 5 and 4172 to 4.
The tapping is ok but I don't know why When I execute S1000M3 command then Spindle speed is 1250, motor speed is 1000.
In normal I known when execute S1000M3 then Spindle speed is 1000rpm and motor speed is 800rpm with 1: 1.25 ratio.
Could you help me to solve this problem.
Thank in advance.
Best Regard.
BKCOM

[ben_heinman]

When you execute the M3S1000 are you measuring the spindle speed or going by the display? Your display may be showing your motor speed instead of the spindle speed. There is a parameter to display spindle speed or motor speed.

[stevo1]

What I see for the Oi control is Parameter 3105.2 =1 to display the spindle speed and T code on the program check screen. Parameter 3111.6 =0 display the motor speed, =1 displays the spindle speed.

Stevo

[lmostafa]

hy all i have machine machining center Fanuc 0i-mc A02B-0309-B502 date 2005/05 it sent the program but did not receive my test with nclinc all parrametres connection on my pc is good :
stop bits 2/
baud rate = 9600/
data bit = 7.
and also provides memory card error
hep me pleez

[BKCOM]

Hi Imostafa.
You try to change to Chanel 2.
the monitor has any errors and warning ?
Good luck