What Are the Effects of Harmonics and EMI on the Increasing Amount of Industrial Ethernet Found in Manufacturing Facilities?
First, let’s clarify that ‘Industrial Ethernet’ is a blanket term covering Profinet, Ethernet/IP, Modbus TCP, EtherCAT, and any other industrial fieldbus utilizing Ethernet as a physical layer. Industrial Ethernet is inherently resistant to EMI, as the standard twisted-pair cable used for transmission cancels out most differential-mode noise between the conductors. Transformer coupling on the Ethernet card itself cancels out most common-mode noise as well.