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Texas Instruments Introduces MCU With EtherCAT, Ethernet, And CAN FD Connectivity

Texas Instruments (TI) has introduced their F2838x MCU, designed for AC servo drives and other industrial automation devices. The 32-bit MCU is part of the C2000 micro-controller family. The MCU allows designers the utilization of a single chip to achieve serial connectivity, including EtherCAT, Ethernet, and CAN FD. Devices equipped with such communication ports frequently necessitate an external [...]

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Industrial Ethernet Guide - TCP/IP Protocol Positions Within OSI Reference Model

The following is part of  A Comprehensible Guide to Industrial Ethernet by Wilfried Voss.The TCP/IP layer model follows the OSI 7-Layer Reference Model to a certain degree as demonstrated in the image documenting the Ethernet TCP/IP protocol layers. The similarities to the OSI model are apparent.However, they do have their subtle differences. After all, OSI is [...]

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Industrial Ethernet Guide - Standard Ethernet TCP/IP

The following is part of  A Comprehensible Guide to Industrial Ethernet by Wilfried Voss.As the term Ethernet TCP/IP (Transmission Control Protocol / Internet Protocol) indicates, Ethernet TCP/IP is not a single protocol. It comprises of a full suite of protocols based on the two original protocols TCP and IP. In other words, Ethernet TCP/IP is a layered protocol, where each layer [...]

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Industrial Ethernet Guide - The OSI Reference Model

The following is part of  A Comprehensible Guide to Industrial Ethernet by Wilfried Voss. The OSI Reference Model is at the heart of serial networking technologies, including Industrial Ethernet. The understanding of the model is mandatory, not only when it comes to understanding Ethernet TCP/IP, the underlying technology of Industrial Ethernet; it also serves as a model explaining how the different [...]

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Industrial Ethernet Guide - A Brief History of Ethernet and TCP/IP

The following is part of  A Comprehensible Guide to Industrial Ethernet by Wilfried Voss.The Ethernet technology came to life in 1972 at the Xerox Corporation’s Palo Alto Research Center, more commonly known as PARC, when researcher Bob Metcalfe designed and tested the first Ethernet network. While working on a way to link Xerox’s "Alto" computer to a printer, Metcalfe developed [...]

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Industrial Ethernet Guide - Real-Time Works Only In A Box

The following is part of  A Comprehensible Guide to Industrial Ethernet by Wilfried Voss.Ages-old technology wisdom says that real-time works only in a box. This statement has, however, been obsoleted by Industrial Ethernet. Industrial Ethernet allows the design of a real-time network rather than an isolated real-time system.Note: The reference to real-time capabilities of Industrial Ethernet [...]

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Industrial Ethernet Guide - The Dependence On Intelligent Nodes

The following is part of  A Comprehensible Guide to Industrial Ethernet by Wilfried Voss.In review, any Fieldbus system (a.k.a. Distributed Control), utilizing a certain level of network management, is based on communication between one central system (Master, Server) and several nodes (Slave, Client). These nodes are nothing else but processor systems, and old technology wisdom states [...]

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Industrial Ethernet Guide - The Special Role Of Industrial Ethernet

The following is part of  A Comprehensible Guide to Industrial Ethernet by Wilfried Voss.While distributed control delivers a significant number of advantages, the most prominent being the vastly reduced amount of wiring, it still has to deal with the restrictions of traditional serial communication technologies, specifically their bandwidth limitations. The result is that traditional technologies, especially when [...]

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Industrial Ethernet Guide - Client/Server Vs. Master/Slave

The following is part of  A Comprehensible Guide to Industrial Ethernet by Wilfried Voss.The distinct differences between a Client/Server and a Master/Slave network model have a significant impact on the design of Industrial Ethernet applications not only in terms of device/process interaction but also the data traffic pattern, which may require increased use of network segmentation [...]

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CAN Bus And SAE J1939 Bus Voltage

CAN Bus MediumAccording to ISO-11898 specification, the CAN bus medium must support two logical states: Recessive and dominant. A CAN controller with its TTL output uses an additional line driver (transceiver) to provide the standard CAN Bus level. The dominant level (TTL = 0V) always overrides a recessive level (TTL = 5V), which is, especially [...]

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