Who'd Thunk It? Arduino and PLCs Hook Up Via RS232 and Modbus - DesignNews

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Who'd Thunk It? Arduino and PLCs Hook Up Via RS232 and Modbus DesignNews In researching industrial controls projects for my “Introduction to PLCs” and “Advanced Programmable Logic Controllers” courses that I teach at a local Alabama community college, I was quite surprised to see that an old serial communications standard ...