By Wolfhard Lawrenz
Commercial engineers more and more utilize microprocessors to watch and regulate commercial approaches. This ebook offers a entire account of the way CAN (controller sector community) may be designed and utilized in a wide selection of business settings. It covers completely: CAN chip implementations, CAN chip programming, CAN layout, CAN approach trying out and wiring, and will functions. the writer is a widely known professional during this know-how with huge adventure in those options with businesses starting from Intel, Motorola, and IBM via to Volkswagen and Bosch. He brings to endure his services by means of delivering examples of commercial networks from industries corresponding to textiles, elevators, milling machines, excavators, and dental chairs. starting with the elemental idea of business regulate platforms, the publication presents basic examples of networked platforms. Then stepwise, readers are proven how one can follow CAN platforms and the way to check them. accordingly, digital engineers operating with business keep an eye on structures will locate this a massive e-book to possess.
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Additional info for CAN System Engineering: From Theory to Practical Applications
8 kBitls. 8 ms. 13 ms. 22 CAN System Engineering from Theories to Application Communication is based on the variable-exchange idea. The actual details are ''hidden" to the application and facilitate the application program design process. Application programs must be written in ''Process-Pascal" language, a derivate of Pascal. Comment. Simple architecture for communication. Higher level language hides details. But problems may arise, because a specific language is available only and maintenance of that language may be difficult in the future, when the language evolves and/or changes in the priority of this language with respect to others may occur.
The lower parts of layer 1 - the remaining part of PMA sub layer of layer 1 and the MDI-sub layer - typically are integrated on a separate chip, which is called a "line transceiver", see par. 5. The separation into the two chips today is due to the fact that the requirements concerning electrical and logical performances are so different that today's technologies are not capable of integrating the whole functionality into one chip. The technical constraints for the transceiver require characteristics such as high immunity against line transients in the range of more than 100 volts, ''high'' current line driving capabilities, ''high'' voltages for the signal swings on the communication lines, etc.
Volume .. ~ 140 J II Mlo Units 120 100 80 60 i--- i--- Conservative status and forecast based on W. J. """ 99 Year fig. 2-1: CAN Accumulated Production Volume Analysing the sales curve shows that 9 million CAN interfaces have already been sold from 1989, when the first Intel CAN chip 82526 was launched as a product, until the end of 1994, when some additional semiconductor manufacturers such as Philips and NS. provided CAN products. By the end of 1996, a total sales figure of 30 million is expected, and by the end of this century a sales figure of more than 140 million is projected.