基于CP340通讯模块的船舶机舱监控系统设计与应用

本文描述了基于西门子通讯模块CP-340 的PLC 与MAN B&M 柴油主机通讯的船舶自动监控系统设计与应用。通过西门子可编程控制器S7-300 及CP-340 通讯模块，并基于RS-422 现场总线协议对船舶柴油机的滑油压、油温、淡水压力、燃气温度等模拟量和水位、油舱高位等开关报警量进行监控，并显示在机舱控制台的各仪表和显示器上，实现了船舶机舱的自动监控。经在大中型船舶机舱中的实际应用表明，该监控系统功能完善、性能优良、可靠性高，完全能够满足船舶航行的要求标准。
关键词： 船舶柴油机；PLC（S7-300）； 通讯模块（CP-340）；现场总线(RS-422）
Abstract: This article described design and application of the automatic monitoring system of shipping based on communication of CP-340 module and MAN B&M diesel. According to programmable controller S7-300 and CP-340 module, analog quantities such as the oil pressure to the shipping engine, temperature of oil ,freshwater pressure, temperature of gas-fired, etc and the switch amounts such as water level, etc are controlled based on RS-422 local bus, and they are displayed on monitor. It is shown that the system with high function, good property and high reliability can meet the requirement of Shipping sails.
Keywords: shipping engine；PLC；S7-300；CP-340；RS-422