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Industrial Ethernet Guide - Determinacy and Real-Time Control (The Hunt for CSMA/CD)
The following is part of A Comprehensible Guide to Industrial Ethernet by Wilfried Voss.Any solution attempting to achieve true determinacy and real-time control based on Ethernet TCP/IP requires the elimination of the CSMA/CD, IP, and UDP components, because their combined characteristics contribute to unpredictable cycle times and additional jitter.CSMA/CD can be easily eliminated through the use [...]
Industrial Ethernet Guide - Classification of Industrial Ethernet Protocols
The following is part of A Comprehensible Guide to Industrial Ethernet by Wilfried Voss.Note: This chapter represents a paradox in so far that it proves that a credible classification of Industrial Ethernet protocols based on performance characteristics, despite many such attempts, does not exist. Too many conflicting performance tests added to the confusion not only for [...]
Industrial Ethernet Guide - Industrial Ethernet Protocols
The following is part of A Comprehensible Guide to Industrial Ethernet by Wilfried Voss.Note: It is important to re-iterate the point that a sufficiently detailed description of each protocol involved is clearly outside the scope of this book. Complete documents are provided by the respective manufacturers or standardization/user organizations, even though they usually provide little educational [...]
Industrial-Strength Raspberry Pi Mini Computer With CAN Bus Port Supports Industrial IoT Applications
Techbase, a business specializing in small form factor industrial computers, announced their ModBerry M500, a mini-PC that utilizes the new Raspberry Pi 4. ModBerry devices are suited for use in harsh industrial conditions, e.g., factories, power plants, and more.The foremost advantage of the iMod platform comes with the ease-of-use and a variety of available functionalities. Due to [...]
PICAN2 - Raspberry Pi CAN Bus HAT Supports SocketCAN and Python Programming
The PICAN2 board provides Controller Area Network (CAN) Bus capabilities for the Raspberry Pi. It uses the Microchip MCP2515 CAN controller with MCP2551 CAN transceiver. The CAN Bus connection is via DB9 or 3-way screw terminal. The board is also available with a 5 VDC 1 Amp SMPS (Switch Mode Power Supply) that can power the Raspberry Pi via [...]
CAN J1939 Digital Automatic Voltage Regulator
Deep Sea Electronics has introduced its DSEA108 digital automatic voltage regulator with an onboard SAE J1939 port that allows the integration with third-party devices. The DSEA108 regulates the output voltage of an AC alternator that is supplied by a stator auxiliary winding or a shunt system taking power from the output windings. It features higher levels of stability [...]
Internet-of-Things (IoT) Projects Using The GSM/GPRS/GPS SIM800 Shield For Arduino
Our GSM/GPRS/GPS board is an Arduino shield based on the Quad-band GSM/GPRS/GPS module SIM808, rendering cellular and GPS tracking, all in one module. It allows you to add location-tracking, voice, text, SMS, and data to your application. This shield fits right on your Arduino or compatible device. At the heart is a powerful GSM cellular module (we use [...]
Industrial Ethernet Guide - Ethernet TCP/IP for Process Control
The following is part of A Comprehensible Guide to Industrial Ethernet by Wilfried Voss.Given all the technical aspects of Ethernet TCP/IP, including its strengths and weaknesses, that have been presented thus far, the critical engineering mind may challenge the need for sophisticated Industrial Ethernet protocols.After all, all Industrial Ethernet protocols benefit from the vast speed of Ethernet TCP/IP. Random delays [...]
Industrial Ethernet Guide - Switched Ethernet
The following is part of A Comprehensible Guide to Industrial Ethernet by Wilfried Voss.Ethernet switches are of significant importance when it comes to the total prevention of bus arbitration (CSMA/CD) occurrences, may it be for Ethernet TCP/IP or some (but not all) Industrial Ethernet protocols such as Ethernet/IP and Modbus/TCP. The elimination of the bus arbitration process [...]
Industrial Ethernet Guide - Ethernet TCP/IP Is Not Deterministic
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 or, in other words, Ethernet TCP/IP is a layered protocol, where each layer builds upon its lower [...]