HEIE420158R1 ABB

More successful is the node bus arrangement of the system.The connection of the coaxial cable is not in front of the communication module,but at the back of the module,so that when the communication module fails during system operation,it can avoid accidentally touching the coaxial cable and causing the network cable to be disconnected.At the same time,the coaxial cable will not be touched at any time except for special inspection,which can prevent the coaxial cable from being loosened due to repeated plugging and unplugging,which increases the possibility of its failure.In addition,a management system for inspection and replacement of coaxial cables should be formulated,and replacement or treatment should be carried out before the contact resistance increases to affect communication.

比较成功的是系统的节点总线布置方式。其同轴电缆的连接不是在通信模件的前面，而是在模件的后面，这样当系统运行中处理通信模件故障时，可避免误碰同轴电缆，造成网线断路。同时，其同轴电缆除专门进行检查，任何时候都不会去触动，可防止因多次插拔同轴电缆的插头造成松动，增加其故障的可能。另外，应制定同轴电缆检查与更换管理制度，在其接触电阻增大至影响通信之前，进行更换或处理