火車站給水系統(tǒng)中OMRON CP1H與研華模塊的無線通訊 Wireless Communication of OMRON CP1H and ADVANTECH Module in WaterSupply System of Railway Station 武漢工科自動(dòng)化/技術(shù)部 陳錚錚 吳敏 李躍龍
Abstract: Among many control systems, there are partial equipment controlled shall require remote measurement and remote control usually, but which is inconvenient to lay the cable or optical fiber (such as wiring route is blocked by hillslope, river or city building). So it appears more important to execute wireless remote measurement and remote control by PLC at this time. The system mainly is composed by an OMRON CP1H-XA40DT-D PLC, two JAMMY wireless data transmission modules, an ADVANTECH ADAM4050 and an ADVANTECH ADAM4017. CX—Programmer7.1 matched with PLC and developed by OMRON Electric Company is adopted to compile the command procedure and control procedure of water tower and filter water basin for ADVANTECH module, JAMMY sting software is adopted to set parameters for wireless data transmission module as well as InTouch configuration software of America rware Company is used to compile the equipment status of whole process flow, so as to real time monitor the parameters and human-computer control interface. The system is simple, practical, convenient and reliable, with high performance ratio, and has passed acceptance certification, its different control indexes have reached the desired requirements. The system is widely applied in railway system.
在該控制系統(tǒng)中,因子控制系統(tǒng)分散,并且采用不同廠家的設(shè)備和方案。所以要將這些子控制系統(tǒng)集成,并架構(gòu)統(tǒng)一的實(shí)時(shí)監(jiān)控系統(tǒng)。這樣的實(shí)時(shí)監(jiān)控系統(tǒng)需要解決分散子系統(tǒng)間的數(shù)據(jù)共享,各子系統(tǒng)需要統(tǒng)一協(xié)調(diào)相應(yīng)控制指令,再考慮到實(shí)時(shí)監(jiān)控系統(tǒng)往往需要升級(jí)和調(diào)整,就需要各子系統(tǒng)具備統(tǒng)一的開放接口。 OPC(OLE for Process Control) 規(guī)范正是這一思維的產(chǎn)物。OPC規(guī)范了接口函數(shù),不管現(xiàn)場(chǎng)設(shè)備以何種形式存在,客戶都以統(tǒng)一的方式去訪問,從而保證軟件對(duì)客戶的透明性,使得用戶完全從低層的開發(fā)中脫離出來。通過OPC定義的開放接口,可以實(shí)現(xiàn)利用PC機(jī)上的組態(tài)軟件和模塊間數(shù)據(jù)交換,從而對(duì)被控設(shè)備的遙測(cè)遙控。