Configuration 7i92m_7i76x1D

I believe the problem is probably the STEPGEN_MAXACCEL setting for axis.0. It needs to be about 25% larger than the max acceleration. Right now you have it %50 smaller.

edit:
So either lower the max acceleration to about 80 or raise the stepgen maxaccel to about 250.

Thanks, Todd. It works.

I have in my configuration hal file
"net both-home-x <= hm2_7i92.0.7i76.0.0.input-07"
I choused that because there is no separete choice.
But I need separate minimum limit (could be for X Y and Z), maximum limit and separate home for each.
What I need to write in my hal file?

MESA 7i76 also has analog spindle Enable+, Enable-, Dir+, Dir- outputs. Does they support 24V?

There is nothing "magic" about the name "both-home-x", it could be called anything.

If you look elsewhere in the HAL file you will probably find that somewhere there is something like

net both-home-x axis.0.neg-lim-sw-in axis.0.pos-lim-sw-in axis.0.home-sw-in

(May be split over several lines)

To do them separately you cold have:

net red hm2_7i92.0.7i76.0.0.input-07
net blue hm2_7i92.0.7i76.0.0.input-08
net yellow hm2_7i92.0.7i76.0.0.input-09
...
net red axis.0.neg-lim-sw-in
net blue axis.0.pos-lim-sw-in
net yellow axis.0.home-sw-in

Or any variation on that theme.

In PncConfig, you can choose almost any combination of combined or separate home and limit switches and you most certainly can choose separate positive, negative and home switch inputs. But it is a simple hal edit to make what ever combination that is not available.

MESA 7i76 also has outputs to control spindle - Enable+, Enable-, Dir+, Dir-. Does they support 24V if I have the same field voltage?

The DIR and ENA outputs are isolated switches (optocoupler outputs) so connect between the + and - leads when ON
They can be to switch 5V to 50V signals with a maximum current of 50 mA. They have no connection to field power
So basically they are used just like a mechanical switch with the limitation that they are DC only, you must observe polarity
and they are limited to switching 50 mA.

You do have to be careful that you do not swicth into a shorted load or you will destroy the optocoupler

I start to test pindle analog output and it has some strange behave.
For easy count voltage, I set maximum speed as 1000

I've measured voltage between 0V <> Vout.
Output is VERY! unlinear. What is the reason of this?

Are you measuring between TB4 pin 1 and TB4 pin 2? (from SPINDLE- to SPINDLE OUT)
What's the voltage between TB4 pin 1 and TB4 pin 3? (from SPINDLE- to SPINDLE+)

Yes, I measure TB4: pin1, Pin2.
Between pin1 and pi3 there is 10,45V.

What is the source of the 10.45V, is the 10.45 V constant at all spindle settings?