Learning Note 7

(1) Traffic light control

Refer to the design of Lu Liangxiong classmate, with relay control three lights of the dark time and sequence, PLC circuit is simpler. SW1 for the general switch, press the SW1 after entering the daytime mode. SW2 for the night mode switch, press into the night mode, PB1 for the pedestrian button, SW2 bounce out of the night mode. The lamp's dark order is the same as the requirement, the specific light time for debugging convenience and the requirements slightly different.

(2) Conveyor belt control

This example is relatively simple, only need to pay attention to the motor is turning and reversing the open stop. After commissioning, a relay is added at the Y010 to allow the goods to fall smoothly on the conveyor belt. A certain delay is also set at the left limit to ensure that the last cargo has left the conveyor belt when the next cargo falls. The simulation results are the same as the experimental requirements.

Learning Note 7