CAJ | 학술논문

针对 Profibus DP 网络系统运行过程中的 EM277丢站（通信中断）现象，基于搭建的 Profibus DP网络实验平台，模拟其所处工作环境中的电磁干扰（EMI）、接地系统、网络参数设置等因素，并结合Profibus 网络报文，对 EM277丢站因素进行分析，提出应合理设置网络系统参数，加入中继器以实现信号的有效放大和再生处理，对网络设备与通信电缆进行屏蔽及正确接地以抑制 EMI 等解决方案。工程实例验证了该方案的可行性。
침대 Profibus DP 망락계통운행과정중적 EM277주참（통신중단）현상，기우탑건적 Profibus DP망락실험평태，모의기소처공작배경중적전자간우（EMI）、접지계통、망락삼수설치등인소，병결합Profibus 망락보문，대 EM277주참인소진행분석，제출응합리설치망락계통삼수，가입중계기이실현신호적유효방대화재생처리，대망락설비여통신전람진행병폐급정학접지이억제 EMI 등해결방안。공정실례험증료해방안적가행성。
According to station missing phenomenon of EM277(communication interruption)in the Profibus DP network system running process,based on the built Profibus network experiment platform,working envi-ronment factors such as the electromagnetic interference(EMI),grounding system,the settings of network parameter and so on were simulated,and combined with Profibus network message analysis,the phenome-non of EM277 station missing was analyzed. The corresponding engineering solution was proposed:reasona-bly setting up network system parameters,adding repeaters to realized the effective amplification and regen-eration treatment,shielding and correcting grounding of network equipment and communication cables to in-hibit EMI. etc. The feasibility of the scheme was verified by engineering examples.