The Programmable logic controller (PLC) aim will enable to*Basic knowledge of PLC*PLC input/output modules*PLC input /output functions*PLC Timer functions*PLC Counter functions*construction of PLC Ladder diagram *PLC Programming basic examples*PLC- industrial application problem *PLC software used RS Logix 500 (Rockwell software)*Additional Problems using Timer and counter *Boolean Algebra*Mechatronics system Design *Different 12 case studies on different industrial application using PLC programming with usage of RS Logix 500 (Rockwell software)*in addition to this content focused on Supervisory control and Data Acquisition (SCADA) *Also heighted on Micro-electro Mechanical System (MEMS)There different five chapter has included with certain objective like-¿ Understand and learn about automation control systems ¿ Learn about the types PLC functions, construction of Ladder Programming ,with assuage of RS Logix 500 (Rockwell software)¿ Case studies tells about different application of PLC which used in Industry.