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OPM_CNT_SNM_BAS_CRD_1GB_V012.doc Operating Manual SNMP/Web Adapter
8 OTHER FUNCTIONALITIES
8.1 SYSTEM TIME
The SNMP/Web adapter provides means to maintain the system time. Particularly, the adapter will
maintain an internal clock when powered-up, while an RTC with battery back-up will hold date/time
information when off (or during power-cycles). This system offers a sufficient accuracy in the short term.
However, in the longer term the time drift may become significant.
For best results it is recommended to configure the adapter for communication with an NTP server. This
forces the system time to be synchronised with an external source, and it will ensure long-term
date/time accuracy.
8.2 SERIAL BY-PASS (1-PH/SP VERSION ONLY)
The SNMP/Web adapter offers some diagnostic and UPS Service functionalities. These features are not
targeted to the end user. The serial bypass is one of these features, and it is introduced here only for
completeness.
With the serial bypass functionality the SNMP/Web adapter are configured in transparent mode. That is,
the adapter acts as a relay between its serial port (DB9F local console port) and the serial connection to
the UPS control board. This functionality is activated by injecting a serialbypass on command through
the console interface (either local or remote).
This functionality is only meant to be used for obtaining service access to the UPS, and as such is
subject to some limitations. Particularly, it is recommended that the end user does not activate it, as the
adapter will signal a Communication Lost alarm.
In case the serial bypass is accidentally enabled, it can be disabled (with full adapter operation restored)
by injecting a serialbypass off command through the console interface – obviously, only through remote
connection, as the local console is not offering console interface access.
At start-up the adapter will always configure its local console interface for normal operation.
This means that if the adapter is reset (or reboots) it will exit the serial bypass functionality.
8.3 HTTP BASED MONITORING (1-PH/SP VERSION ONLY)
The 1-ph/SP SNMP/Web adapters offer an additional method to monitor the UPS operation. The web
interface offers a dynamic page (that is, generated on the fly upon request) picturing the current UPS
status. The page is available as a single-line text page, no HTML, no authentication required.
The page location is http://<IP or Hostname>/ge_alarm.asp
.
The single-line text has the following format:
[Date / Time];[Keyword];[Alarm Text]
where:
[Date / Time] is the date and time of the instant the web page was created
[Keyword] is NORMAL, INFORMATION, WARNING or CRITICAL, indicating increasing severity of
the UPS condition.
[Alarm Text] is a comma separated value (no blanks) of all active alarm conditions