3 housekeeping – Powerware 9330 User Manual
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Powerware 9330 (10 kVA--40 kVA) Installation and Operation
164201300 REV. G 061502
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The UPS logs a successful notify to the event log when the remote computer or
modem answers and leaves an event message with the following format.
nnn
nnn
= UPS_Remote_Notification---Default (40 characters maximum)
mmm
= Event message for notice or alarm (40 characters maximum)
= ASCII line feed character (0x0A)
= ASCII carriage return character (0x0D)
If calling a pager service and the service answers, the modem can delay
momentarily and before dialing the pager number. Refer to “Configuring the
Modem to Call a Numeric Pager” section of this chapter for more information.
NOTE: Because the pager service is not a modem, the UPS does not know if its
message got through; therefore, the UPS continues to call the pager service
for a programmed number of times or until a call-in reset is performed or the
front panel is reset. An unsuccessful notify event is logged into the UPS
event log for each attempted call out.
If the phone number that the UPS is calling does not answer, the UPS delays for 5
minute through 60 minute time periods before reattempting the call. If answered,
the UPS ceases further attempts to call. Each unsuccessful attempt to call causes
an unsuccessful notify event to be logged into the UPS event log.
If all call groups are active, the UPS alternates between calling the groups. The
Call Out process is terminated any time a successful connection is made by a
remote terminal or by resetting the front panel of the UPS.
13.3.3 Housekeeping
When the modem is idle, the UPS “pings” (tests for connection) the modem by
sending an “AT” to the modem at 15 minute intervals. If the modem does not
respond correctly, by sending “0” (OK) to the UPS, the UPS attempts to re-initialize
the modem. After a successful re-initialization, the UPS returns to the
Housekeeping function. If the re-initialization is unsuccessful, three attempts to
re-initialize the modem are made. Re-initialization is then attempted every 15
minutes or until the communications mode is changed by the UPS front panel
controls (or the modem is successfully re-initialized). For each unsuccessful
attempt, the UPS logs a check modem event into the event log. When the modem
link is confirmed, the UPS communications resume normal operation.