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发明公开
CN106707946A S7-200 PLC与ACE3600 RTU通信的数据线 无效 - 撤回

S7-200 PLC与ACE3600 RTU通信的数据线
摘要：
本发明提供一种S7-200PLC与ACE3600RTU通信的数据线，包括：第一线缆、第二线缆、转换模块、8针RS232接口和9针RS485串口公头，其中，第一线缆的一端和第二线缆的一端通过转换模块连接，第一线缆的另外一端连接8针RS232接口，8针RS232接口用于插接ACE3600RTU的RS232接口，第二线缆的另外一端连接9针RS485串口公头，9针RS485串口公头用于插接S7-200PLC的9孔母头；转换模块包括：电源单元、RS232电平转换单元和RS485电路单元，其中，电源单元通过8针RS232接口的1脚和8针RS232接口的3脚提供的供电电源为RS232电平转换单元和RS485电路单元进行供电。本发明能降低通信成本。
摘要（英）：

The invention provides a data line for communication between an S7-200 PLC (Programmable Logic Controller) and an ACE3600 RTU (Remote Terminal Unit), which comprises a first cable, a second cable, a conversion module, an eight-pin RS232 interface and a nine-pin RS485 serial port male connector, wherein one end of the first cable and one end of the second cable are connected through the conversion module; the other end of the first cable is connected with the eight-pin RS232 interface; the eight-pin RS232 interface is used for being plugged in an RS232 interface of the ACE3600 RTU; the other end of the second cable is connected with the nine-pin RS485 serial port male connector; the nine-pin RS485 serial port male connector is used for being plugged in a nine-pin female connector of the S7-200 PLC; the conversion module comprises a power unit, an RS232 level conversion unit and an RS485 circuit unit, and the power unit provides power for the RS232 level conversion unit and the RS485 circuit unit through power provided by the first pin of the eight-pin RS232 interface and the third pin of the eight-pin RS232 interface. Thus, the communication cost can be reduced.

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