| 摘要 |
<P>PROBLEM TO BE SOLVED: To change the display unit of a protective relay device with less change to hardware or software. <P>SOLUTION: A CPU unit 1 is mounted with a board 1B for LAN connection that can be connected with the outside through LAN. The display unit is constructed of an embedded PC 4 with touch panel function that is connected with a central processing module 1A through LAN via the board for LAN connection and indicates the state of a protective relay device. When a PC 3 for indicating the state of the protective relay is externally connected in this basic configuration, the embedded PC with touch panel function is removed and the board for LAN connection and the PC for indication are connected through LAN. When the PC for indicating the state of the protective relay is externally connected, the embedded PC with touch panel function and the PC for indication are connected through LAN via a hub from the board for LAN connection. <P>COPYRIGHT: (C)2009,JPO&INPIT |
