2.1 Operation and Composition Principle of Industrial Robot Safety System+ 2.2 Understanding towards Robot Body, Teaching Pendant and Control Cabinet+ 2.3 Function and Connection of Robot Body Interface+ 2.4 Fundamental Coordinate System of Industrial Robot+ 2.5 Device Distribution, Function and Disassembly Steps of Robot Control Cabinet+ 2.6 Connection and Verification of Industrial Robot's External Emergency Stop Signal+