现场总线在应用中主要考虑其通信电缆、通信电源故障，“T”型分支或终端电阻故障也会引起总线故障。
The main facts we should consider are the trouble caused by the communication cable, communication power, t type branch or the terminal resistor problem in the application of site bus technology.
机器终端用电设备分布在机器的不同部分，电源指示面板或终端设备有可能存在强电的危害。
The terminal electrical devices of this welder are distributed at different positions. The power indication panel or terminal devices may have the danger of force electricity.
负载传感自动检测自动对终端设备上的以太网在提供电源电源。
Automatic load sensing automatically detects power over Ethernet on the end device before providing power.
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