The MAVLink Stop Node halts communication with a MAVLink serial port and ends the heartbeat.
It is important to note that while the MAVLink Stop Node stops a MAVLink connection, it may not completely finish disconnecting from said connection when the Node is executed. This could lead to the Logic attached to its Output Pulse to not work even though there is technically nothing wrong. In order to avoid this, it is highly suggested to use the On MAVLink Stop Node instead. This way, it is assured that the Logic will execute once the connection to the MAVLink connection has been terminated.
Again, the user must first use the MAVLink Stop Node to close the connection. Separately, the On MAVLink Stop Node can be used to execute the desired Communication Logic.