Evaluating the Perceptions of Electrical Engineering Diploma Students Toward the Programmable Logic Controller (PLC) Course at Politeknik Kota Bharu

Abstract

Abstract— This study evaluates student perceptions of the Programmable Logic Controller (PLC) and Automation course (DEJ40093) among fourth-semester Electrical Engineering (DET) and Electrical and Electronic Engineering (DEE) diploma students at Politeknik Kota Bharu. A quantitative research design was employed, utilizing a survey method involving 59 respondents. The research instrument comprised an online questionnaire based on a five-point Likert scale, encompassing four primary domains: interest and importance of PLC, perceived level of difficulty, motivation and confidence and the effectiveness of teaching methodologies. Data analysis was conducted using descriptive statistics (mean and standard deviation), Cronbach’s Alpha reliability testing and Pearson correlation analysis. The findings demonstrate that all domains exhibited high reliability, with Cronbach’s Alpha values exceeding 0.90, indicating instrument stability. Descriptive analysis revealed that students possess a strong interest in PLC and acknowledge its critical role in their future careers, particularly valuing practical sessions and simulation software. However, PLC programming, ladder logic diagrams and troubleshooting were identified as the most significant learning challenges. Despite these hurdles, student motivation remains high. Pearson correlation analysis indicated a moderately strong positive relationship between student interest and the perceived career importance of PLC (r = 0.676), whereas the correlation between interest and programming difficulty was very weak (r = 0.158). This suggests that career relevance is a more strong motivator of student interest than the technical difficulty of the subject. In conclusion, while technical challenges persist, student perceptions remain overwhelmingly positive. Recommendations include adopting more interactive teaching approaches, increasing hands-on training and integrating advanced visual aids to enhance mastery of PLC systems.

Keywords— Programmable Logic Controller (PLC), Course Evaluation, Ladder Diagram, Instructional Effectiveness, CX-Programmer.