Main steps in the process of upgrade of existing systems for automation and control of industrial and manufacturing processes in order to fulfill the requirements of the concept "industry 4.0"

Nowadays a significant share of the manufacturing and industrial processes is automated by classic control systems that need to be upgraded in order to meet the new requirements for digitalization and optimization. In this paper are reviewed the main ideas and principles of the concept “Industry 4.0” and is defined a basic set of technical, organizational and economic measures to be followed in the process of the upgrade of existing control systems to fulfill the requirements of the concept. Due to the fact that the upgrade in most of the cases needs customized approach, all proposed steps need to be reviewed as a minimum required and in some of the cases some additional steps might be needed due to the current system specifics.