K. Tindell and H. Hansson, "Real-time systems and fixed priority scheduling," Tech. Rep., Dept. of Computer Systems, Uppsala University, Oct. 1995.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....low level devices. If high level function, for instance, a work station, is to be connected, other networks may be more suitable. There is vast number of communication protocols and fieldbuses. A short summary is now given of some of the most used fieldbuses, see also Olsson and Piani (1992) and Tindell and Hansson (1995). Foundation Fieldbus The Foundation Fieldbus was developed by the organization Fieldbus Foundation, a not for profit organization with over 100 member compa18 2.2 Networks nies, including several major international automation companies. Foundation Fieldbus is released for two speeds, 31.25 ....

....varying crystal temperature. This effect is not corrected for by the clock synchronization described in Section 4.1, which will only correct for a constant clock drift. A synchronization error of this size, some tenths of a millisecond, will be seen throughout the experiments. The utilization, see Tindell and Hansson (1995), of the bus is defined as U # X i C i T i , 4.12) where i is the number of periodic transmissions on the bus, C i is the transfer time for this message, i.e. t s , and T i is the period for sending of message i. The utilization is a measure of how much load there is on the bus. The ....

TINDELL, K. and H. HANSSON (1995): "Real time systems and fixed priority scheduling." Technical Report. Department of Computer Systems, Uppsala University.

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K. Tindell and H. Hansson, "Real-time systems and fixed priority scheduling," Tech. Rep., Dept. of Computer Systems, Uppsala University, Oct. 1995.

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