Simulation of Application Software for a Ttp Real-time Subsystem

This paper addresses the development of fault-tolerant distributed real-time systems using the TTP protocol. It’s a protocol-specific characteristic that a TTP real-time system only works when all nodes are connected to the bus system. This is a severe obstacle for the projectability of such real-time systems since system parts are often developed by external partners of the supply industry. One possible solution to solve this problem is presented in this paper. In the first chapter we describe the modeling of non-available TTP nodes which work within a TTP cluster. The following chapters deal with the simulation of the application software for modelled TTP nodes. Last but not least a method to validate the application’s functional and timing requirements is presented.