The application of PLC in power propulsion simulation system

The paper introduces the key questions and technical essentials involved in the PLC design of marine power propulsion. The whole design of the systemic technical scheme, the hardware composition and configuration of the PLC system, the integral network frame of the system, the PLC program designing of the hypogyny computer are also involved. It recommends modular program designing concept of PLC software while programming by STL, and illustrates with examples concretely. The treatment processes in hardware and software of PLC are analyzed when dealing with the conversions between A/D and D/A.