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Domestic PLC: Demand and Abilities |
V.N. Rusanov, N.V. Silyanov
There are considered factors defi ning the needs of developing domestic programmable logic controllers (PLC), including those based on the native component basis. A short overview of domestic PLC is presented. Perspective domestic components are enlisted. Microcircuits for designing high-speed commutation structures on the basis of SpaceWire and Ethernet interfaces are studied. There are given examples of organizing industrial networks with backbone and switching structures. The possibility of providing fail-safety by redundancy with substitution and using self-diagnosis principles. According to the self-diagnosis results it is proposed to control switching to the redundant channel by OK signal. In this case redundancy device may be implemented
in one microcircuit, providing high reliability. There are given examples of industrial controllers. It is demonstrated that at present it is possible to develop perspective PLC using domestic components for designing industrial automation fail-safe systems.
Keywords: programmable logic controller; domestic component basis; fail-safety; redundancy device; troubleshooting problem.
Contacts: E-mail: vRusanov@niiis.nnov.ru, E-mail: nsilyanov@gmail.com
Pp. 24-32. |
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