| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a monitoring apparatus capable of visually checking an operation state of a sequence circuit of a relay unit, and capable of easily checking integrity of its operation state without using a measuring device and a temporary wiring. <P>SOLUTION: An optical switch/wireless tag is provided to a relay for configuring the relay unit. The sequence circuit of the relay unit can be visually checked by applying a monitoring device composed of a wireless reading device, a database, a processing device, and a display screen. The integrity of its operation state can be easily checked without using the measuring device and the temporary wiring by comparing a result of making an operation unit constituting the processing device calculate the content of an development connection diagram and the operation state of the sequence circuit of the relay unit. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
