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           This file is read by the driver controller upsdrvctl(8), the UPS
           drivers that use the common core (see nutupsdrv(8), and upsd(8)). The
           file begins with global directives, and then each UPS has a section
           which contains a number of directives that set parameters for that UPS.
           A UPS section begins with the name of the UPS in brackets, and
           continues until the next UPS name in brackets or until EOF. The name
           "default" is used internally in upsd, so you can't use it in this file.
           You must define the driver and port elements for each entry. Anything
           after that in a section is optional. A simple example might look like
                       driver = blazer_ser
                       port = /dev/ttyS0
                       desc = "Web server UPS"
           A slightly more complicated version includes some extras for the
           hardware-specific part of the driver:
                       driver = apcsmart
                       port = /dev/cua00
                       cable = 940-0095B
                       sdtype = 2
                       desc = "Database server UPS"
           In this case, the apcsmart(8) driver will receive variables called
           "cable" and "sdtype" which have special meanings. See the man pages of
           your driver(s) to learn which variables are supported and what they do.


               Optional. The driver will chroot(2) to this directory during
               initialization. This can be useful when securing systems.
               Optional. Path name of the directory in which the UPS driver
               executables reside. If you don't specify this, the programs look in
               a built-in default directory, which is often /usr/local/ups/bin.
               Optional. Same as the UPS field of the same name, but this is the
               default for UPSes that don't have the field.
               Optional. The status of the UPS will be refreshed after a maximum
               delay which is controlled by this setting. This is normally 2
               seconds. This may be useful if the driver is creating too much of a
               load on your system or network.
               Linux system, the first serial port usually is /dev/ttyS0. On
               FreeBSD and similar systems, it probably will be /dev/cuaa0.
               Optional. When you have multiple UPSes on your system, you usually
               need to turn them off in a certain order. upsdrvctl shuts down all
               the 0s, then the 1s, 2s, and so on. To exclude a UPS from the
               shutdown sequence, set this to -1.
               The default value for this parameter is 0.
               Optional. This allows you to set a brief description that upsd will
               provide to clients that ask for a list of connected equipment.
               Optional. When you specify this, the driver skips the port locking
               routines every time it starts. This may allow other processes to
               seize the port if you start more than one accidentally.
               You should only use this if your system won't work without it.
               This may be needed on Mac OS X systems.
               Optional. When you specify this, the driver ignores a low battery
               condition flag that is reported by the UPS (some devices will
               switch off almost immediately after setting this flag, or will
               report this as soons as the mains fails). Instead it will use
               either of the following conditions to determine when the battery is
                   battery.charge < battery.charge.low
                   battery.runtime < battery.runtime.low
               The idea is to set the battery.charge.low and/or
               battery.runtime.low levels in ups.conf to a value that gives enough
               time to cleanly shutdown your system:
                   override.battery.charge.low = 30
                   override.battery.runtime.low = 180
               In order for this to work, your UPS should be able to (reliably)
               report charge and/or runtime remaining on battery. Use with
               Optional. This can be set as a global variable above your first UPS
               definition and it can also be set in a UPS section. This value
               controls how long upsdrvctl will wait for the driver to finish
               starting. This keeps your system from getting stuck due to a broken
               driver or UPS.
               Optional. Set a value for <value> that overrides any value that may
               be read from the UPS. Used for overriding values from the UPS that
               are clearly wrong (some devices report wrong values for battery
               voltage for instance):
                   override.battery.voltage.nominal = 12
               Use with caution! This will only change the appearance of the
               variable to the outside world, internally in the UPS the original
               value is used.
           All other fields are passed through to the hardware-specific part of
           the driver. See those manuals for the list of what is allowed.


           upsdrvctl(8) uses this file to start and stop the drivers.
           The drivers themselves also obtain configuration data from this file.
           Each driver looks up its section and uses that to configure itself.
           upsd(8) learns about which UPSes are installed on this system by
           reading this file. If this system is called "doghouse" and you have
           defined a UPS in your ups.conf called "snoopy", then you can monitor it
           from upsc(8) or similar as "snoopy@doghouse".


           upsd(8), nutupsdrv(8), upsdrvctl(8)
       Internet resources
           The NUT (Network UPS Tools) home page:

    Network UPS Tools 10/09/2011 UPS.CONF(5)


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