The Machine Setup tab defines the physical capabilities of your CNC machine, its firmware behavior, and how G-code should be generated. A properly configured machine profile ensures your output matches your hardware's constraints and expectations.
- **Max Spindle** — The highest RPM your spindle supports. This limits the `feed` speeds set in your [cam operations](/kiri-moto/CAM/ops) to generate proper and safe `S` values in G-code.
Macros insert custom G-code at key stages of toolpath generation. Each tab corresponds to a different context:
in these boxes, you have access to [gcode macros](../gcode-macros). Not all macros are available in all contexts, so be careful!
- **Header** — Runs once at the beginning of the job (e.g., mode override, move to safe Z)
- **Footer** — Runs at the end of the job (e.g., spindle stop, move to safe Z)
- **Tool** — Called when changing tools. automatic tool changes and tool measument can be put here.
- **Dwell** — Code for pausing movement/spindle at specified positions
- **Spindle** — Code to set spindle RPM
## RML dialect
Kiri Moto supports the [RML](https://downloadcenter.rolanddg.com/contents/manuals/PNC-3200_USE2_E_R5.pdf) dialect of G-code.
When a machine's file extention is set to `.rml`, Kiri Moto will use the RML dialect, using `PU` for non-cut moves, and `Z` for cut moves. RML commands can be used in the `Header`, `Footer`, `Tool`, `Dwell`, and `Spindle` sections of the Machine Setup tab in the same way that G-code commands are used.
We love to add new machines to the Kiri Moto library. If you have a tested machine that you'd like to add, you can export your workspace as a `.kmz` file, and share it on the [discord](https://discord.gg/suyCCgr) or [forums](htps://forum.grid.space).
If you want to submit a PR, you can find instructions for how to do so [here](https://github.com/GridSpace/grid-apps/blob/master/contributing.md#how-to-add-a-new-machine).
