| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a system for permitting interruption from a maintenance/ inspection work side while maintaining an excellent operation state in the case of being provided with a LAN for plant operation control and the LAN for instrumentation equipment inspection capable of bidirectional information transmission with a portable information terminal. SOLUTION: Writing from the portable information terminal 12 to a process computer 8 is made possible through the LAN 6 for the plant operation control and a gateway server 30 is provided in the connection part of the LAN 6 and the LAN 7 for the instrumentation equipment inspection. Then, a setting tag part 31 corresponding to respective instrumentation equipments is provided in the process computer 8, a judgement part 32 for judging the propriety of the write from the portable information terminal 12 corresponding to the respective instrumentation equipments to the process computer 8 corresponding to the state of the setting tag part 31 is provided and the write is performed only in the case of judging that the write is possible in the judgement part 32.</p> |
