Here's my own fluidnc configuration for a 1500x1500 bulkmann3D CNC with an X-Pro V5 controller.
The spindles VFD is a H100 type controler using the RS485 serial connection. As of today I had no communication problem with the VFD, I have used no resistor nor optic isolation, a simple short twisted pair cable. The only drawback is to pay attention on the starting sequence:
- X-Pro controler and VFD are switched on at the same time.
- The PC or at least the serial connection to the PC should come after controler and VFD start
If you want to use this config, please pay attention to the Y-axis homing configuration. In my case, the Y-axis end switches (yes they are one on each Y axis) are mounted on the front of the CNC to allow visual control of the switches and easy cleaning of them.
So if the absolute positions are negative on the X and Z axes, they'll be positive on the Y axis. This in no way hinders g-code execution, but you do need to be careful when using G53 G0 Y... type commands.
The openbuilds Fusion Processor is a slightly modified version including the default Y change, I have also added the use of the M7 command that turns the vacuum on when selecting the vaccum in the tool selection of Fusion.
Any comments are welcome.