Consider the figure below: This is a water tank. Input valve High level sensor Low level sensor Output valve You have a PLC system as the one used in the laboratory: Power supply, CPU, digital input module, digital output module. The task is to control the level of the water with the PLC, with the following task specifications. The tank has an input valve and an output valve. The two valves are solenoid valves, actuated by 24 V DC (and they are connected to the PLC). The tank has two level sensors. One for low level and one for high level. The level sensors are simple normally open limit switches actuated by buoyant force principle. The level switches are connected to the PLC. The output valve is controlled by a human operator over a push-button connected to a PLC. This is according to the needs of some process running in a factory and the human operator decides when to activate the output valve. When the level drops below the low level sensor, the input valve should be activated until the water level reaches the high level. This is the one and only working principle of the water level control. Sometimes it is necessary to drain the tank fully. For such cases, two push buttons are connected to the PLC. One of them activates the level control as described above and the other one deactivates the level control. The status of the controller (level control active or level control inactive) is signaled to the operator via two signal lamps: One for "controller active" and one for "controller inactive." The signal lamps are actuated by 24 V DC (and they are connected to the PLC.) - Configure your PLC system (IO module addresses) (5 pts) - Draw a wiring diagram (20 pts) - Form a symbol table (5 pts) - Write a PLC program for this task (20 pts)