For example, a PLC in a kiln could be set for the range of normal temperatures. If the kiln gets too hot, the PLC will automatically lower the temperature. If the chip were to be damaged by testing and the temperature ran wild, the kiln would certainly be ruined and there could even be a lethal explosion.
譬如鍋爐中的 PLC 已設定正常的溫度範圍，一旦鍋爐過熱就會自動降溫；萬一測試前後儀器失靈、導致溫度過熱，小則鍋爐毀損，大則引發爆炸，後果不堪設想。