[Grbl_Esp32 Issue#250] Homing doesnt work as intended About GRBL HAL

Issue #250 | 状态: 已关闭 | 作者: karoria | 创建时间: 2019-10-11

I use NO type inductive proximity limit switches for my mini vmc machine. Somehow, I am not able to configure homing correctly. The switches responds as hard limits but for homing it has to rapidly sense object two times to successfully home any axis. If i take more than a second in sensed position, message of homing failed pops up. I have tried almost all the combination of homing related parameters but no luck. Please guide me where I might have missed something.

#1 – bdring 于 2019-10-11

I don’t understand.

Move the X axis far away from the switch.
– Do you see a switch activated with the ? command.
– Send $HX. Does the axis move towards the switch?
– Does is reverse when it gets close to the switch?
– Does it go back for the second attempt or fail?

Have you tried adjusting the $27 “Homing switch pull-off distance” to a larger value?

#2 – JackHouseLab 于 2019-10-11

Hi,
Try to set $5 “Limit pins invert, boolean” to 1 – it helped for me.

#3 – karoria 于 2019-10-12

Thanks for prompt response @bdring and @JackHouseLab.
I have already tried $5 invert but no luck.
Will try the tests Barton has suggested and will reply soon.

#4 – karoria 于 2019-10-16

Sorry to bother you for a silly mistake.!! Actually the switch was not disengaging properly as $27 homing switch pull off distance was only 2mm. Increased it and solved.
Thanks again for your valuable time.

#5 – ggallant571 于 2019-10-16

Not a silly mistake, valuable lesson. I never would have caught it!!!

On 10/16/19 1:38 AM, Ravi Karoria wrote:
>
> Sorry to bother you for a silly mistake.!! Actually the switch was not
> disengaging properly as $27 homing switch pull off distance was only
> 2mm. Increased it and solved.
> Thanks again for your valuable time.
>
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原始Issue: https://github.com/bdring/Grbl_Esp32/issues/250

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