上位机同时挂接现场总线或光纤网络，搜索底层设备数据。

The host, upper PC connected with field bus or fiber network simultaneously, is responsible for searching the date of bottom devices.

youdao

上位机同时挂接现场总线或光纤网络，搜索底层设备数据。

The host, upper PC connected with field bus or fiber network simultaneously, is responsible for searching the date of bottom devices.

youdao