公共对象层管理网络服务对象，访问现场总线设备，元件层实现不同现场设备间的互操作。

Networks service object was managed, and the field bus equipments were visited with public target layer. The inter-operation among different equipments was realized with component layer.

youdao

公共对象层管理网络服务对象，访问现场总线设备，元件层实现不同现场设备间的互操作。

Networks service object was managed, and the field bus equipments were visited with public target layer. The inter-operation among different equipments was realized with component layer.

youdao