Front and Side Ports standard.

正面和侧面端口标准。

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The standard Bus Couplers have an RS232 interface at the bottom of the front face.

标准总线耦合器具有在正面底部的RS232接口。

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The standard Bus Couplers have an RS232 interface at the bottom of the front face.

标准总线耦合器具有在正面底部的RS232接口。

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