Silos that are filled by bulk trucks (also known as road tankers) have several equipment to be controlled for safe and efficient silo loading. Automatic filling control system has a PLC controlled electrical panel that has full control over silo equipment. Silo top jet filter, silo inlet pinch valve, level sensors, pressure sensors and other components are connected to control panel. The power of air compressor of bulk solid tanker truck is supplied by built in power supply plug. Silo filling control system checks silo before filling for safety, controls the power sent to bulk truck, checks the product level, silo inner pressure during silo filling. System both controls the equipment and protects the silo from overfilling and over pressure. Silo top air vent jet filter, silo pressure sensor, silo level sensors, pinch valve , pressure relief valve, explosion vent panel, pinch valve and other silo components are connected to silo control system.