Delta MS300 VFD, RS485, RPI4, QTdragon, getting it to work

A few days ago I didn't know anything about modbus... now I know much more... The most important thing is that I've learn that not every device supports reading at bit-level, that's why I see people using mux4/enum/weighted_sum.

The Delta MS300 manual says that adres 2000H, bit 0 and1 made high, should make it able to Jog... but I've never used it. I also don't know if that is spindle depended.There is a lot to read about jogging in the manual, but I'll probably never use it

To make things even more interesting (or difficult ) I will also try Mesa_modbus. I'm not sure if it will work with my 7c80, but there is a serial port on it, it should be on with my firmware. Wil test everything later... my machine is not nearby....

Mesa_modbus config-file I've made so far:

Yesterday I've made a teamviewer connection between my home-pc and my cnc-machine (that's in a cold space), that gave me an nice environment to test thing. And... mb2hal is working!  I've attached my mb2hal config. I'm not happy with the naming yet. I expected all names like mb2hal.spindle.[pin-name]. But only the first transaction is named that way.

But...... I have EMI problems I think, When I stop my spindle, usb-devices often stops working.
My PI is connected to my Delta MS300 via usb, using the inbuild rs485 converter of the VFD. What shell I do? Use mesa_modbus and eliminated the use of a usb-cable? Do I need another firmware to use mesa_modbus on my 7c80? I probably have to put my 7c80/PI4 in a steel box too... I'll ask this kind of things on the printnc-discord...

The firmware's for the 7c80 doesn't seam to have pktUart enabled. I've asked Mesa for help. Compiling the mesa_modbus driver was the easy part
 

It looks like I've solved my electrical problems, changed some cables and used some ferrite cores.

@PCW: Can you help me getting PktUART working on my 7c80? There is no firmware on the mesa-website that supports PktUART...

Hi Calysto,I use the same components as you. RPI4 on 7c80 and MS300.
I am currently using the PWM terminal to control the spindle. Can you share the whole configs folder with me?
This will help me a lot to understand by comparing the differences.

Here it is. I use 2.9.2. The joypad does not work correctly yet. Where you are looking for should be in the "4_QT_spindle", "9_QT_postgui" and "mb2hal_MS300" files.

Happy to hear I'm not the only one with this setup

I've connected my VFD with an usb cable to my PI. I hope there will be Pktuart firmware for the 7c80, so we can use the RS422 connector.

If you have questions, let me know....

 

Thank you PCW!!!!

This firmware for 7c81 board?