COMMUNICATIONS PORTS (RS232 and USB)
The RS232 communication port is a standard DB9 female with both RS232 and simulated contact closure capability. The
Pin 1: EPO Emergency Power Off (pull and hold this pin low to turn off the UPS, release this pin from low to turn to restart the UPS)
Pin 2: /TXD
Pin 3: /RXD and receive ups shutdown command
Pin 4: Simulated contact closure AC fail, NO
Pin 5: Ground
Pin 6: Simulated contact closure low battery warning, NO
Pin 7: Simulated contact closure AC fail, NC
Pin 8: AC fail signal (high to low signal)
Pin 9: Not Used
NOTE: See the SentryII CD for the Power Monitoring Software installation. See the USB Driver CD for the USB installation.
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