Nippon Seiki Co., Ltd.

Satoshi Ota

Hideki Masuda

A control substrate is provided with a first electric current limiting resistor and a first voltage limiting Zener diode which are connected to a power supply line, and second electric current limiting resistors and second voltage limiting Zener diodes which are connected to communication lines. Of an electronic circuit configured from the control substrate and a sub-substrate, a first area connected to one side of the power supply line and the communication lines and a second area connected to the other side thereof with reference to the first and second electric current limiting resistors and the first and second voltage limiting Zener diodes are arranged spaced apart from each other by a predetermined interval so that the areas are considered separate areas in terms of intrinsically safe explosion-proof requirements.

Communication device

Provided is a plant equipment state gathering system which simplifies the work relating to attaching and/or replacing a detection device that detects the state of plant equipment. A plant equipment state gathering system is provided with a detection device, a mobile terminal, a network construction device and a data storage device. The detection device includes a tag unit that can store, in a non-contact manner, at least some setting information that at least includes network information for connecting to the network from the mobile terminal. The mobile terminal includes a tag control unit that allows the tag unit of the detection device to automatically store, in a non-contact manner, at least some of the setting information. When network information is stored in the tag unit of the detection device by the mobile terminal the network construction device uses this network information to determine whether to allow the connection of the detection device to the network.

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Niigata, Japan

Satoshi Ota