control and automation

Q: Design a Monitoring and Control of filling a Tank PLC ladder logic program The PLC program simulates a process tank filled with fluid. The tank will start filling (via a valve) whenever the start process button is enabled and the tank is below 50% full. It will shut off when the tank is 100% full. In case the level sensor is out of calibration or not working properly, there is a high-level safety limit to prevent the tank from overfilling. If the high limit is met at a preset value of 102%, the process will shut down and a strobe light will turn on. Indicator lights are activated when the tank level reaches 50%,75%, and 100% full as shown in the diagram of the tank in Figure 1 . There is a slight dead band to prevent flickering lights when tank levels vary slightly due to filling or splashing. Figure 1. Diagram of the tank a) Identify all possible input and output signals and label (give proper name or abbreviation) all of them. b) Write the ladder logic program for this design