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Ethernet Learns to Keep Time: IEC 61784-2 Real-Time Profiles and IEC 61784-5 Installation
A brand-new PROFINET network on a nitrogen package at the Al Sahil Gas Complex keeps losing a drive every time a welding crew works nearby. Khalid Mansoori, the senior electrical engineer, suspects the cabling; Tomás Iglesias, the vendor's integration engineer, suspects the configuration. They are both right. Through one week of fault-finding, they explain how Ethernet was taught to keep time, what the IEC's real-time Ethernet profiles actually promise, how PROFINET, EtherNet/IP, Modbus TCP and EtherCAT achieve real time in very different ways, and why the installation standards for…
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