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              浙大中控dcs卡件XP313通信網絡,節點總線常見故障原因?

              2021-05-11 17:16:26 來源:http://www.eboudy.com/ 53

              通信網絡類故障
              Communication network fault
              通信網絡類故障一般易發生在接點總線、就地總線處,或因地址標識錯誤所造成。
              Communication network faults are usually caused by contact bus, local bus or wrong address identification.
              節點總線故障
              Node bus fault
              節點總線的傳送介質一般為同軸電纜,有的采用令牌信號傳送方式,有的采用帶沖突檢測的多路送取爭用總線信號傳送方式。不論采用哪種方式,當總線的干線任一處中斷時,都會導致該總線上所有站及其子設備通信故障。
              The transmission medium of node bus is generally coaxial cable, some use token signal transmission mode, some use multi-channel transmission contention bus signal transmission mode with conflict detection. No matter which way is adopted, when any part of the main line of the bus is interrupted, it will lead to the communication failure of all stations and their sub devices on the bus.
              目前,一般防止此類故障的方法是采用雙路冗余配置的方式,避免因一路總線發生故障而影響全局,但這并不能從根本上避免故障的發生,并且一旦一根總線發生故障,處理時容易造成另一個總線故障,其后果是非常嚴重的。有效的方法應是從防止總線接觸不良或開路人手。
              At present, the general way to prevent this kind of fault is to use dual redundant configuration to avoid the global impact due to the failure of one bus, but this can not fundamentally avoid the occurrence of the fault, and once a bus fails, it is easy to cause another bus failure, and the consequences are very serious. The effective way is to prevent the bus from bad contact or open circuit.
                                 浙大中控dcs卡件XP313
              某個比較成功的系統節點總線布置方式。其同軸電纜的連接不是在通信模件的前面,而是在模件的后面,這樣當系統運行中處理通信模件故障時,可避免誤碰同軸電纜,造成網線斷路。同時,其同軸電纜除專門進行檢查,任何時候都不會去觸動,可防止因多次插拔同軸電纜的插頭造成松動,增加其故障的可能。另外,應制定同軸電纜檢查與更換管理制度,在其接觸電阻加大至影響通信之前,進行更換或處理。
              A more successful system node bus layout. The connection of the coaxial cable is not in front of the communication module, but behind the module. In this way, when dealing with the failure of the communication module in the operation of the system, it can avoid touching the coaxial cable by mistake, resulting in the open circuit of the network cable. At the same time, the coaxial cable will not be touched at any time except for special inspection, which can prevent the plug of the coaxial cable from loosening due to repeated plugging, and increase the possibility of its failure. In addition, the coaxial cable inspection and replacement management system should be formulated to replace or deal with before its contact resistance increases to affect communication.
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              This article is provided by the central control DCS card of Zhejiang University. Thank you for reading. I hope the above contents can help you. If you want to know more wonderful contents, please click our official website: http://www.eboudy.com .
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