blockdiag {
	node_height = 100;
	span_width = 2;
	default_fontsize = 16;

	START [label="0x7E"];
	CMD [label="CMD"];
	DAT [label="Payload", width=300];
	CRC [label="CRC16"];
	END [label="0x7E"];

	START -> CMD [style = none];
	CMD -> DAT [style = none];
	DAT -> CRC [style = none];
	CRC -> END [style = none];
}