> For the complete documentation index, see [llms.txt](https://docs.smart-stuff.nl/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.smart-stuff.nl/p1-modbus-dongle/support/connection-diagram.md).

# Connection example

This legacy field example shows a P1 Modbus adapter connected to a Growatt SPH inverter through RS485 (thanks Willem). Verify terminal labels against the [current P1 Modbus Pro hardware page](/p1-modbus-dongle/hardware-variants/hardware-variants/p1-modbus-pro.md); do not use this image as a D1MC pin-out.

<figure><img src="/files/sweIpl7O06spEVOvYrsX" alt=""><figcaption></figcaption></figure>