loadusr -W ./craftsman_toolchange
net tool-change iocontrol.0.tool-change => craftsman_toolchange.change
net tool-changed iocontrol.0.tool-changed <= craftsman_toolchange.changed
net tool-number iocontrol.0.tool-prep-number => craftsman_toolchange.number
net tool-prepare-loopback iocontrol.0.tool-prepare => iocontrol.0.tool-prepared