Each node in the network broadcasts its unique identifier to the other nodes. The slot plate is thus moved with respect to the microwave entrance window to change at least one of the position, number and area of slot openings where the microwave is passed. Further, the method includes the steps of notifying a recipient of the communication, if the communication is allowed. Side portions of the housing limit the opportunity for outside air to enter the airlock assembly during the discharge of materials, maintaining the vacuum suction created by the negative pressure in the auger assembly. The normalized throughput is assigned to the bottleneck client, and the bottleneck client is assigned to a fixed set. The control unit selectively substitutes the first display image for an image displayed on the flexible panel in the final time.