Microprocessor technology and programmable logic controllers in new generation railway traffic control and management systems

An application of modern microprocessor technique and more effective microprocessor systems has a large influence on development of devices railway transport and railway automation systems. Functioning new generation railway traffic control and management systems is largely based on Programmable Logic Controllers (PLC), which allow the designers to exploit self-control mechanisms, events registration, technical diagnostics, remote control and fault detection). Railway traffic control and management systems belong to safe technical railway transport solutions, it means that they have to meet the fourth safe integrity level CENELEC (SIL-4), what implies, that the configuration principles and software installed have to satisfy CENELEC EN 50 128 and EN 50 129 standards.