mk3:canbus []

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===== CAN Bus Settings =====

To configure the CAN interface, go to **Connections → CAN Bus** in the sidebar.\\
The settings box allows you to configure each available CAN bus individually.

''You can find the CAN bus wiring guide [[:mk3:wirringcan|here]]''

==== Bus Selection ====

Use the **dropdown menu** to select the CAN bus you want to configure, e.g. ''CAN1 Inverter'', ''CAN2 CMU'', etc.
==== Baud Rate ====

Select the desired **baud rate** from the dropdown list.\\
If you're unsure, use the **"Detect Baud Rate"** button to scan the bus.

''💡 This function requires at least one active device already sending on the CAN bus.''
==== Termination Resistor ====

Use the **dropdown** to set the internal termination resistor:

   * Enabled (120 Ω)
  * Enabled (60 Ω)
  * Off (Open)

You can also use the **"Detect Termination"**  button to estimate whether termination is currently active.

==== Measuring Termination Manually ====

To manually check termination, follow these steps:

  * **Power off**  all devices on the CAN bus
  * Measure the resistance between **CAN High and CAN Low**  using a multimeter
      * Correct termination should show ~60 Ω (2× 120 Ω in parallel)
      * 120 Ω indicates one terminator is missing
  * Set the BMS's internal resistor accordingly using the dropdown

''⚠️ Proper termination is critical for reliable CAN communication. \\ Typically, one 120 Ω resistor is placed at **each end**  of the bus.''