Communication Ports - HP 1U User Manual

3. Installation

3.5 Communication ports

Connecting RS-232 or USB communication port
The RS-232 and USB communication ports cannot operate simultaneously.
2
1
Characteristics of the optocoupler RS-232 communications port
When a signal is activated, the contact is closed between the common (pin 2) and the pin for the corresponding signal.
Contact characteristics (optocoupler)
• Voltage: 48 Vdc max
• Current: 25 mA max
• Power: 1.2W
Installing the communication cards
It is not necessary to shut down the UPS before installing a communication card.
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5
6
1. Connect the RS-232 5
communication cable to
the serial or USB port on
the computer equipment.
2. Connect the other end of the com-
munication cable to the USB
2
RS-232 communication port on
the UPS.
The UPS can now communicate with
HP power management software.
• Pins 1, 3, 4, 5, 6, 10: not used
• Pin 2: common (user)
• Pin 7: low battery
• Pin 8: operation on battery power
• Pin 9: UPS on, equipment sup-
plied
no: normally open contact
1. Remove the slot cover (3).
2. Insert the communication
card in the slot.
3. Secure the card cover with
the two screws you removed in
Step 1.
792518-001 Edition 1
or USB 6
1
or