シリアルコネクタ
APC SmartUPS コンソールサーバー

PinSignalDescription
1Shut Down RS232 In or Smart mode RS-232 RX InSet high for 4.5sec to activate shutdown?
2Line Fail RS-232 Out or Smart mode RS-232 TX Out 
3Line Fail signalNormally not shorted to GND
4,9GNDGround, chassis
5Low battery signalNormally not shorted to GND
6Line fail signalNormally shorted to GND
7UPS Turn-on/off signal 
8Unregulated +24 Vdc Out 





http://www.networkupstools.org/protocols/apcsmart.html
http://www.wsrcc.com/wolfgang/ups/