Reference Wiring

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Searching for the RS232 ID of the Toolboard

Important Notes

Important Preparations

1. Firmware Requirement:
   The toolboard must be flashed with the RS232 firmware, otherwise communication will not be possible.
2. Mandatory Common Ground:
   ⚠️ Before connecting the toolboard, you must ensure its GND is connected to the mainboard's GND (sharing the same 24V/12V power supply will achieve this).

RS232 Notes

• Besides the D8, D8PRO, and C8P, which support the RS232 interface, other mainboards do not support the RS232 interface.
• For unsupported mainboards, you need to use a G2T or UTOR for connection.

Searching for the RS232 ID

1. Open a browser, enter the host's IP address in the address bar (for example, if the host IP is 192.168.101.179, enter it directly and press Enter).

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2. Open the host's WEB interface, and find the following in the configuration options on the left sidebar:

For fluidd: {…}, click to enter, then find printer.cfg. Loading...

For mainsail: Machine, click to enter, then find printer.cfg. Loading...

3. Click into printer.cfg, then click DEVICES in the upper right corner.

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4. Click SERIAL, then refresh.

Refreshing in fluidd. Loading...

Refreshing in mainsail. Loading...

5. Copy the ID. Click where the arrow points to copy.

In fluidd, check if ch341-uart exists, then click Path_by_hardware. This is the RS232_ID. Loading...

In mainsail, check if CH341-UART exists, then click Path_by_hardware. This is the RS232_ID. Loading...

Notes

• When using UTOR to connect the toolboard, two RS232_IDs often appear. Please try them one by one.

Filling in the Toolboard RS232 ID

• Below is a reference configuration.

  Notes

  • In the configuration below, toolboard refers to the toolboard name. If it has a different name, replace it accordingly.
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  [mcu toolboard]
  serial: <Replace here with the ID you just queried>
  baud: 250000
  restart_method: command

  • Adding the toolboard ID must be [mcu toolboard] followed by serial: and then the toolboard ID you searched for.
  • Below is a reference configuration.
  • Please note this tutorial is for toolboard ID search and configuration. Normally, it is already properly connected to the mainboard.
  • The mainboard must be [mcu], and the toolboard is [mcu toolboard].
  • Click SAVE & RESTART in the upper right corner. Clicking will automatically save and restart Klipper.

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Note: All IDs appearing in the document are examples. The actual ID for each mainboard is different. Please fill in the ID you actually obtained.