| 摘要 |
A controller and a display device are connected to each other by a network. The controller comprises a network control program which controls a network control section to communicate with the display device for each of a plurality of operation modes, including an initialization mode, a normal action mode, and an alarm mode. Various data, such as operation mode information for the controller, are transmitted to the display device connected by the network through the network control section and display data is displayed on the display device.
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