TPBULK545432

说明：  总线标准的最重要特点是公用性。具有相同总线的不同功能的模块都可以挂接到总线上，共享总线，扩充性能好
(fieldbus standard is the most important feature of the public nature. The same bus with the different functional modules that can be articulated bus, the bus, expansion of good performance)