自动化博览
自動化博覽
자동화박람
AUTOMAITON PANORAMA
2014年
10期
90-93,97
,共5页
变频器%定时轮询%通讯程序%可靠性设计
變頻器%定時輪詢%通訊程序%可靠性設計
변빈기%정시륜순%통신정서%가고성설계
Inverter%Timing poll%Communication procedures%Reliability design
变频器与PLC之间通讯在工业设备中的应用越来越普遍，工业现场的各种干扰会严重妨碍两者正常的数据通讯，除了硬件设计要考虑抗干扰外，PLC软件程序设计方面更应当考虑可靠性。通过合理的通讯程序设计,包括访问数据的先后次序、定时轮询、随机通讯等软件手段能有效的提高PLC控制系统在干扰环境下与变频器可靠地数据交换。实践结果表明在相同硬件条件下改进通讯程序算法能够有效地改善通讯质量，有较强的实用价值。
變頻器與PLC之間通訊在工業設備中的應用越來越普遍，工業現場的各種榦擾會嚴重妨礙兩者正常的數據通訊，除瞭硬件設計要攷慮抗榦擾外，PLC軟件程序設計方麵更應噹攷慮可靠性。通過閤理的通訊程序設計,包括訪問數據的先後次序、定時輪詢、隨機通訊等軟件手段能有效的提高PLC控製繫統在榦擾環境下與變頻器可靠地數據交換。實踐結果錶明在相同硬件條件下改進通訊程序算法能夠有效地改善通訊質量，有較彊的實用價值。
변빈기여PLC지간통신재공업설비중적응용월래월보편，공업현장적각충간우회엄중방애량자정상적수거통신，제료경건설계요고필항간우외，PLC연건정서설계방면경응당고필가고성。통과합리적통신정서설계,포괄방문수거적선후차서、정시륜순、수궤통신등연건수단능유효적제고PLC공제계통재간우배경하여변빈기가고지수거교환。실천결과표명재상동경건조건하개진통신정서산법능구유효지개선통신질량，유교강적실용개치。
Communication between the inverter and PLC becomes more and more common in application of industrial equipment. Various disturbances in industrial site would seriously impede thenormal data communication between the two. In addition to the hardware design should consider outside interference, the PLC software program design should be considered more reliable. Through rational communication program design : including the order of data accessing, timing polling , random communication and other software can effectively improve the reliable data exchange with the inverter when the PLC control system is in a noisy environment. Practical results show that the modified communication algorithm can efficiently improve the quality of communication under the same hardware environment. and has a strong practical value.
