PP865A 3BSE042236R2 ABB

Local bus or field bus-a data communication network generally composed of twisted pairs,because the connected equipment is a primary element or control equipment that is directly connected with the production process,so the working environment is harsh,the failure rate is high,and it is easily affected by maintenance personnel.misoperation and affect the production process.In addition,the bus itself will also cause communication failures for various reasons.

就地总线或现场总线-般由双绞线组成的数据通信网络，由于其连接的设备是与生产过程直接发生联系的一次元件或控制设备，所以工作环境恶劣，故障率高，容易受到检修人员的误动而影响生产过程。另外，总线本身也会因种种原因造成通信故障。