Inexpensive PLC Output Port Expansion Using Microcontroller

Mohd Shahrin, Darmin (2008) Inexpensive PLC Output Port Expansion Using Microcontroller. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The main objective of this project is to expand PLC output port using a microcontroller (PIC). Both of these items have a same concept which is to become a controller from the instruction given to it. PLC is a digital computer used for automation of industrial processes and it is designed for multiple inputs and output such as arrangements, extended temperature ranges, immunity to electrical noise, and resistance to vibration and impact. PIC Microcontrollers however is a computer system that is fabricated in single integrated chip. PLC however has very limited input and output. To add the input and output to a PLC, a PIC is needed. The way that both these things will interface will be determined during this research. The project start with designing the PLC and PIC program that produces of 16 outputs. The next step is to design hardware as an interface device. Then for the final step, both programs will be added with a few instructions to ensure both devices will be interface properly even though there is a modification done on it.

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