| 摘要 |
<p>PURPOSE:To enable a power source disconnection processing to be performed in spite of a connecting state by generating a compulsory power source disconnection signal at the circuit of a connection port when the connection port not being connected to a system power controller SPC exists. CONSTITUTION:Connecting state recognizing means 10-1 to 10-n are provided at the connection terminals of a unit power controller UPC 3 in a device C, respectively, and also, compulsory power source disconnection signal generating means 20-1 to 20-n which generate the compulsory power source disconnection signals by signals from the connecting state recognizing means 10-1 to 10-n are provided, and those signals are inputted to an AND gate 7 via an OR gate. The connecting state recognizing means detect the connection terminal to which no SPC is connected, and the means is operated by sending a command to the compulsory power source disconnection signal generating means, and the compulsory power source disconnection signal is automatically generated. Thereby, it is possible to surely execute the power source disconnection processing at the UPC 3 in spite of the connecting state of the UPC 3.</p> |
