| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To easily display information from a field inputted to a controller on another device even in the case of abnormality of the controller. <P>SOLUTION: Data sent by an evanescent communication part are communicated to an exciter hub 14 serving as an evanescent communication key station. To the exciter hub 14, an alarm window display device 15 and a monitor CRT 16 are connected and respectively display an alarm window and a field input signal by using data communicated from an I/O part, respectively. Information inputted from the exciter hub 14 is equal to information inputted to the I/O part 11, and consequently, the display on the alarm window 17 and the display on the monitor CRT 16 are carried out through neither a CPU part 10 nor a control network 18. With this arrangement, a simple alarm monitor system which omits signal amplification and cable laying can be constituted at low cost. <P>COPYRIGHT: (C)2004,JPO</p> |
