VMICPCI-7806-211000 350-657806-211000L GE电路板模块

VMICPCI-7806-211000 350-657806-211000L GE电路板模块

操作员面板的以太网屏蔽直接连接到机箱。检查另一个以太网单元的屏蔽是否直接接地或接地经由电容器。在许多情况下，将屏蔽以太网电缆两端连接到机箱是不合适的。可能出现嗡嗡声或接地回路。非屏蔽电缆甚至可能导致更少的通信错误。一个好的解决方案可能是使用屏蔽以太网电缆，但在只有一端。

3.一种选择是打破屏蔽。

4.一种更优雅的方法是用一块扩展屏蔽以太网电缆非屏蔽以太网电缆。

5.您可以通过外部0.1 uF/250 V塑料电容器将屏蔽接地。这将高频瞬变连接到地。

最初,主要使用供应商提供的原始电缆。

·使用屏蔽电缆进行RS232通信。·RS422和RS485使用双绞线和屏蔽电缆。

·使用总线类型的布线;以太网、Profibus、CC链路、CAN、,设备、网络等。

·根据相关总线的适用规范进行安装和连接标准

·以太网使用屏蔽电缆，最好使用箔+编织屏蔽。

·D-sub盖应屏蔽，且屏蔽应连接至在电缆引入处覆盖360°。

Ethernet shielding of the operator panel is connected directly to the chassis. Check that the shield of the other Ethernet unit is grounded directly or through the capacitor. In many cases, it is not appropriate to connect both ends of a shielded Ethernet cable to the chassis. A buzzing sound or ground loop may occur. Unshielded cables may even result in fewer communication errors. A good solution might be to use a shielded Ethernet cable, but at only one end.

3. One option is to break the shield.

4. A more elegant approach is to use an extended shielded Ethernet cable with an unshielded Ethernet cable.

5. You can ground the shield through an external 0.1uF / 250V plastic capacitor. This connects high frequency transients to the ground.

Initially, the original cable provided by the supplier was mainly used.

· Use shielded cables for RS232 communication. RS422 and RS485 use twisted pair and shielded cable.

· Use the bus type of wiring; Ethernet, Profibus, CC links, CAN, devices, networks, etc.

· Installation and connection standards according to applicable specifications of the relevant bus

· Ethernet uses shielded cables, preferably with foil + braided shielding.

· The D-sub cover shall be shielded and the shield shall be connected to cover 360° at the cable entry point.