| 摘要 |
PURPOSE:To detect individually and surely a communication abnormality at the terminal device side by supervising data transmission between the terminal device and a main control supervisory device by means of a stored communication program and displaying at abnormal time. CONSTITUTION:The terminal device 3 and the main control supervisory device 1 make communication by using a CPU7 operated with a communication program detecting a terminal device address stored in a storage means 5, a kind of a terminal device, an attribute such as model and communication abnormality of the terminal device side. The CPU7, upon detection of an abnormality of the terminal device 3, displays communication abnormality on a display means 11. |
