1.1 Course Introduction+ 1.2 PLC structure and working principle+ 1.3 PLC programming language+ 1.4 Basic PLC instructions+ 1.5 PLC wiring+ 2.1 PLC controlled motor to achieve forward rotation+ 2.2 PLC Implementation of Sequential Control+ 2.3 PLC controlled motor to achieve forward and reverse rotation+ 2.4 PLC implementation of position control+ 2.5 PLC control for automatic round-trip of workbenches + 3.1 PLC control of electric motor to achieve Y - Δ Step-down start+ 3.2 PLC control of intersection traffic+