Powerware 5075 kVA - Manual (Page 120)

112 Powerware BPIII Harsh Environment UPS 50--75 kV Installation and Operation
164291261 Rev. F 111503
UPS Setup Configuration
Connect the modem to the UPS by connecting one end of the serial cable to the
optional UPS Port 2 DB---25F connector and the other to the modem (refer to
Chapter 13, “Serial Communications”). If using a standard serial cable, a null
modem adapter is required for the connection to the modem.
The Powerware BP III HE UPS can only use optional serial Port 2, DB---25F, for the
Remote Notification option. This connection is located in the serial
communications panel at the base of the UPS cabinet, behind the front door.
The modem operates at only one baud rate because there is no handshaking
between the modem and the UPS. Select the lowest common baud rate (less than
or equal to 2400 baud) compatible with the capability of the UPS interface
equipment. For example, if the computer only has a 2400 baud modem, then the
UPS should be set for 2400 baud. Remember, the remote computer modem can
always slow down to the UPS baud rate, e.g., a 14400 baud modem can run at
2400 baud, but a 2400 baud modem cannot run at 14400 baud.
Following the instructions in Chapter 9, “Using the Monitor Panel” and Chapter 13,
“Serial Communications”, use the LCD screen and pushbuttons on the Monitor
Panel to access the setup screen and configure Port 2 as follows.
NOTE: The modem should be connected to the UPS as described in the modem
manufacturer’s manual before configuring the UPS communications port.
<MODE> Remote Notify
<RATE> The baud rate at which the modem will communicate
to other modems, 2400 baud maximum.
<DATA/STOP> 8 1 Standard 8 data bits, 1 stop bit, no parity.
<HANDSHAKING> Disabled
<SAVE> Yes. To save new configuration.
The handshaking feature listed is for UPS-to-terminal handshaking, not
UPS-to-modem handshaking. Setting the handshaking to “modem” has no effect.
If the remote terminal has buffering problems because of excessive data transfer
rate from the UPS, XON/XOFF handshaking can be selected to resolve this issue.
The user must make sure that the modem (not the remote terminal) at the remote
terminal end of the connection is configured for either hardware handshaking or
none at all. This is required so that the modem does not attempt to trap the
XON/XOFF characters and prevent them from being transmitted to the UPS.