It's cute, but with a PLC, I would go with the opto isolators. PLC's often switch relays and other noisy things in noisy environments, so you are probably much better off making sure you get a clean signal to your PIC.Originally Posted by locko
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It's cute, but with a PLC, I would go with the opto isolators. PLC's often switch relays and other noisy things in noisy environments, so you are probably much better off making sure you get a clean signal to your PIC.
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