A modern control system application in metals processing and technological progress

In this article, networks and automation structures which are used in Continuous Galvanizing Line (CGL), is last project of Cold Mill Lines in Eregli Iron and Steel Works Co. has researched. It is said that network structure is necessary due to complex structure of the continuous lines. After that server-client system, producer-consumer system and leader/follower-synchronization system which are used in ODS configurations are explained. In addition, Open Distributed Systems' features and subsystems which are constructed on LAN are explained using a model configuration. In the second part of this article network's transmission speeds, communication protocols, transmission capacity, addressing in network, max station number on the network and how it will grown, the total length of transmission, the trouble in the transmission channel, how it will possible to build, up a high reliability network and how network provides high resistance against noise etc. subjects are examined. Melsec Net10 network which is developed for low speed I/O is also explained and it is examined that how this network affect system cost. Man Machine Interface (MMI) systems are also examined and it is determined that what the modern MMI's advantages for the operators and automation system engineers a Technological developments about the PLC, DCS, MMI a, programming therminals are explained. Finally it is presented how this developments affect system cost, reliability, productivity and expandability.