| 摘要 |
PURPOSE: An HMI system is provided to confirm the tranceiving state of real data by displaying communications protocols between a HMI system and a PLC system on the display device of a real HMI system. CONSTITUTION: An HMI system(10) comprises a storage part, a HMI software, and a communications driver. The HMI system is connected to a PC in order to receive a necessary communications driver. The PC comprises a plurality of communications drivers required for a PLC system. The HMI system transmits and receives data to/from a control device through the communications drivers that are transmitted. The HMI system indicates the data on a display device(40).
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