| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve the problem that it is necessary to execute largely scaled alteration for collecting common information from each production facility in a production system in which a plurality of production facilities whose manufacturing dates and control configurations are different are combined and used. SOLUTION: Production facilities 7A, 7B and 7C with signal lights for displaying the operating states of those facilities by allowing signal lights 8A, 8B and 8C to emit lights in prescribed luminescent colors according to a plurality of preliminarily divided operating states are network-connected through a control signal line for controlling the lighting of the signal lights 8A, 8B and 8C to a host computer 1.</p> |
