Communication options, Db-9 communication port, Serial communications port pin assignment – HP Parallel Uninterruptible Power System User Manual
Page 75
Communication 75
o
Standalone UPS configuration—See "Powering up the standalone UPS (on page
)."
o
Parallel UPS configuration—See "Powering up the parallel system (on page
)."
Communication options
The UPS has serial communication capabilities through the DB-9 communication port or through an X-Slot
card in one of the available bays.
The UPS supports two serial communication devices.
NOTE:
Relay, signal inputs, and the serial port baud rates are configurable through the front
panel menus.
X-Slot 1 (independent)
X-Slot 2 (multiplexed)
DB-9 communication port (multiplexed)
HP UPS Management Module HP Parallel UPS Card
Available
HP UPS Management Module Not in use
Available
DB-9 communication port
To establish communication between the UPS and a computer, connect the computer to the UPS
communication port using the supplied communication cable.
For the communication port location, see "Installing communication options and control terminals (on page
)."
Serial communications port pin assignment
Pin number Signal name Function
Direction from the UPS
1
—
No connection
—
2
TxD
Transmit to external device
Out
3
RxD
Receive from external device
In