EM277 station missing factors of Profibus DP network analysis and solutions
QIAO Xi-hua
PENG Xing-xing
MAO Qian-bei
WANG Yong-hua
Abstract：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.
Keywords：Profibus DP networkEM277station missingelectromagnetic interference(EMI)grounding system
Publication Date：2015-04-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 93-98 )