kinda vfd support

[thirstyone]

When I look here https://github.com/grblHAL/drivers?tab=readme-ov-file - specifically, at spindle modbus support line - there's a bit of confusion for me. Is it done artificially, or is there any fundamental reason for a firmware for an stm32f407 or stm32f411 not to support modbus spindle control?

Then, there's another question - on choosing the right option in web-configurator. Initially I thought they (vfds) are using the same application-level protocol, so to say, and a common instruction set. But after looking through that part of code it looks like implementation is different for each make. I am using the KD200-00220S2 from Kinda. Does it mean, I have to provide a pull request to get it supported by firmware?

[terjeio]

is there any fundamental reason for a firmware for an stm32f407 or stm32f411 not to support modbus spindle control?

No, the difference is if a specific board has support for the UART (serial) port required.

it looks like implementation is different for each make.

More or less so, if there is a standard many do not adhere to it.

Does it mean, I have to provide a pull request to get it supported by firmware?

If you can use the MODVFD driver, which is configurable via settings, then no. If not a new driver has to be added.

[thirstyone]

Thanks! Is there any manual/tutorials on how to configure MODVFD? Settings - you mean, recompile firmware or those $462-$471 parameters listed on https://github.com/grblHAL/Plugins_spindle ?
From what I see in the user manual for my VFD, it looks different, doesn't it?
Kinda - KD100 and KD200 user manual.pdf

[terjeio]

Is there any manual/tutorials on how to configure MODVFD?

Not that I am aware of, except that it has been adapted from LinuxCNC so this thread may cointain some pointers.

From what I see in the user manual for my VFD, it looks different, doesn't it?

I think MODVFD could be used since command codes 3 and 6 are used, settings $462-$471 has to be set up to match the VFD.