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  1. Bardes

    What is the best analog input? 1-5V or 4-20mA

    An other reason for using 4-20mA is that it is much more immune to noise (resistance 50-250 Ohm) compared to fx. 0/2-5/10V signals , where the plc input resistance card is in range 0,1-1MOhm). Bardes
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