Check if the wires in the non-standard automation device circuit are short-circuited, especially if the wires in the wire slot are broken by the wire slot. Inspect the air tube for damaged creases. Check if the hydraulic hose is clogged. When checking the circuit at this step, use the necessary multimeter, adjust to the buzzer file, and check the path of the loop. If the trachea has a serious crease, replace it immediately. The hydraulic tubing should be replaced. After ensuring that the above steps are correct, the fault may occur in the controller, but it may never be a program problem. First of all, don't be sure that the controller is damaged. As long as there is no serious short circuit, the controller has short circuit protection inside. The general short circuit will not burn the controller.

First, check if there is a device with high frequency interference near the controller. If so, move it away immediately. If outdoors, high-intensity lightning can also cause the controller to not work properly in an instant. In this case, first clear all possible interference devices and then restart the controller.

Secondly, if the restart is invalid, check if the controller wiring is loose and there is a bad contact.

Finally, if the non-standard automation equipment is wired correctly. Determine if there is a problem with the memory card of the PLC. Replace a new card and download the program to check if the previous memory card is faulty.