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Various communication protocols are used within a typical industrial facility including Modbus RTU, DeviceNet and Profibus. These protocols used over the years have been in a Master-Slave configuration. Intelligent Electronic Devices (IEDs) are slaves to single or multiple masters with one-way communication with the IED acting as a data/controlled node to the master device. Control is implemented...
A new standard, defining protocols has been evolving since 1997, called IEC61850. This standard enables several industrial benefits when using an Ethernet network, such as high speed device-to-device communications (i.e. peer-to-peer communications both digital and analog values) within cycles and between different vendors, high-speed processing of analog signals and a common database naming format...
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