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Process control is widely used in various industries to maximize production, maintain desired quality levels, product safety and make the process more economical. Control that is generally used in many industries is to control liquid, such as controlling the level, flow, pressure, and temperature of liquid using the PID method, the PID controller attempts to correct errors between the measured process variables and the desired set-point with calculations and then issue corrective actions that can be arranged according to the process. In the past, most PID controllers were based on microcontrollers, but now PLCs can also operate PIDs with analog function control because PLC speeds and capabilities have increased. To meet the competency needs of students in process control following industry demands, especially the use of PLC with the PID Method, students need to be given knowledge and skills. One way is the availability of training modules that can grow their enthusiasm and skills when they study. This paper presents the design and implementation of Omron CP1H PLC-based process control training modules that can be used by students to study liquid level control in tanks with PLC-based PID methods.