how to programmed multi point sensor using PLC?

hi, can anyone tell me how to programmed multipoint sensor using PLC. I'm using multi point sensor in my project and i'm using 3 multipoint sensor as input of PLC. the sensor have two point and can detect low level and high level of water..

First create a flow chart of what you want your process to do. Once you understand your process, it will be easier to understand what you need your inputs to do.