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In February of 1986, Robert Bosch GmbH introduced the Controller Area Network (CAN) serial bus system at the Society of Automotive Engineers (SAE) congress. It was the hour of birth for one of the most successful network protocols ever. Today, almost every new passenger car manufactured in Europe is equipped with at least one CAN network. Used also in other types of vehicles, from trains to ships, as well as in industrial controls, CAN is one of the most dominating…
Electrical Power Factor In general power is the capacity to do work. In electrical domain, electrical power is the amount of electrical energy that can be transferred to some other form (heat, light etc) per unit time. Mathematically it is the product of voltage drop across the element and current flowing through it. Considering first the DC circuits, having only DC voltage sources, the inductors and capacitors behave as short circuit and open circuit respectively in steady state. Hence the…
CAN protocol specification CAN Specification 2.0 describes the base frame format (using 11-bit CAN-identifier) and the extended frame format (using 29-bit CAN-identifier).In order to distinguish base and extended frame format the identifier extension (IDE) bit in the control field of the CAN message, as it is defined in CAN Specification 2.0 Part A, is used. This is done in such a way that the frame format in CAN Specification 2.0 Part A is equivalent to the base frame format and…
Advanced functionality with an easier setup: Creating a product that can be described with that phrase is the Holy Grail for just about every type of technology-dependent industry these days, and the increased demand for faster project completion and plant start-up have made it a necessity in manufacturing. The digital plant that seemed so futuristic just a few years ago is providing operators with functionality that most manufacturers never had before. There are still many strides that need to be…
Introduction RP570 = ABB S.P.I.D.E.R. RTU Protocol 570 RP570 is a protocol used between an RTU (Remote Terminal Unit) in a substation and the FE (Front End), which is usually the SCADA software in the Control Centre. RP570 was developed by ABB in beginning of 1990. It was based on IEC 57 part 5-1, presently known as IEC 60870. Known variations are RP571, ADLP80 and ADLP180. ISO/OSI layerRP570 layer 7. Application layer Application layer 6. Presentation layer 5. Session layer…
Features Wireshark has a rich feature set which includes the following: Deep inspection of hundreds of protocols, with more being added all the time Live capture and offline analysis Standard three-pane packet browser Multi-platform: Runs on Windows, Linux, OS X, Solaris, FreeBSD, NetBSD, and many others Captured network data can be browsed via a GUI, or via the TTY-mode TShark utility The most powerful display filters in the industry Rich VoIP analysis Read/write many different capture file formats: tcpdump (libpcap),…
A remote terminal unit (RTU) is a microprocessor-controlled electronic device that interfaces objects in the physical world to a distributed control system or SCADA (supervisory control and data acquisition) system by transmitting telemetry data to a master system, and by using messages from the master supervisory system to control connected objects.[1] Another term that may be used for RTU is remote telecontrol unit. An RTU monitors the field digital and analog parameters and transmits data to the Central Monitoring Station.…
Which is the best protocol for the monitoring and telecontrol of power grids: IEC 61850 or IEC 60870-5-104? Distribution network operators gave us the task of mapping out the pros and cons of both standards. Power grids are becoming increasingly difficult to manage centrally using their existing supervisory control and data acquisition (SCADA) systems. Today, SCADA systems require more interactivity. In order to continue ensuring the balance between electricity demand and supply on the grid, SCADA systems need to be…