Abstract
The use of distributed computer control systems (DCCS) demands high reliability. adequate real-time behaviour and increasinsJy econonxical systems. The last d t~nand rezluires the use of cheap standard ccmpcoents, wl~ncver possible. The following paper discusses the realizMJon of DCCS with respect to these constraints. Problems due to the c(mventional use of standardized c.¢wnmmfication prot(x~ls in distributed control systems in general, and highly-w.liable systems in particular, are shown. Multicast communication cxmcepts are ~ as solutions, using standardized protocols in a problem-specific way. The l~esented ccocepts fulfill the necessity of using standard components, as well as the specific &mands of DCCS.
