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           This man page only documents the specific features of the genericups
           driver. For information about the core driver, see nutupsdrv(8).


           This driver supports hardware from many different manufacturers as it
           only uses the very simplest of signaling schemes. Contact closure
           refers to a kind of interface where basic high/low signals are provided
           to indicate status. This kind of UPS can only report line power and
           battery status.
           This means that you will only get the essentials in ups.status: OL, OB,
           and LB. Anything else requires a smarter UPS.


           Cabling is different for every kind of UPS. See the table below for
           information on what is known to work with a given UPS type.


           This driver supports the following settings in the ups.conf(5):
               Required. Configures the driver for a specific kind of UPS. See the
               UPS Types section below for more information on which entries are
               Optional. The very nature of a generic UPS driver sometimes means
               that the stock manufacturer data has no relation to the actual
               hardware that is attached. With the mfr setting, you can change the
               value that is seen by clients that monitor this UPS.
               Optional. This is like mfr above, but it overrides the model string
               Optional. This is like mfr above and intended to record the
               identification string of the UPS. It is titled "serial" because
               usually this string is referred to as the serial number.
               Optional. The driver will sleep for this many seconds after setting
               the shutdown signal. This is necessary for some hardware which
               requires a sustained level to activate the shutdown sequence.
               The default behavior of the driver is to exit immediately. If this
               doesn't reliably trigger a shutdown in your UPS hardware, use this
               setting to give it more time to react.
               very large values for sdtime may create warnings from upsdrvctl if
           values for output lines are DTR, RTS, and ST. See below for more about
           what these signals mean.
           These values may be negated for active low signals. That is, "LB=-DCD"
           recognizes a low battery condition when DCD is not held high.


           The essence of a UPS definition in this driver is how it uses the
           serial lines that are available. These are the abbreviations you will
           see below:
               On line (no power failure) (opposite of OB - on battery)
               Low battery
               Shutdown load
               Cable power (must be present for cable to have valid reading)
               Clear to Send. Received from the UPS.
               Ready to Send. Sent by the PC.
               Data Carrier Detect. Received from the UPS.
               Ring indicate. Received from the UPS.
               Data Terminal Ready. Sent by the PC.
               Send a BREAK on the transmit data line
           A "-" in front of a signal name (like -RNG) means that the indicated
           condition is signaled with an active low signal. For example, [LB=-RNG]
           means the battery is low when the ring indicate line goes low, and that
           the battery is OK when that line is held high.


           0 = UPSonic LAN Saver 600
               [CP=DTR+RTS] [OL=-CTS] [LB=DCD] [SD=DTR]
           1 = APC Back-UPS/Back-UPS Pro/Smart-UPS with 940-0095A/C cable
               [CP=RTS] [OL=CTS] [LB=-DCD] [SD=-RTS]
           5 = Tripp Lite UPS with Lan2.2 interface (black 73-0844 cable)
               [CP=DTR] [OL=CTS] [LB=-DCD] [SD=DTR+RTS]
           6 = Best Patriot with INT51 cable
               [CP=DTR] [OL=CTS] [LB=-DCD] [SD=RTS]
           7 = CyberPower Power99 Also Upsonic Power Guardian PG-500, Belkin
           Belkin Home Office, F6H350-SER, F6H500-SER, F6H650-SER
               [CP=RTS] [OL=CTS] [LB=-DCD] [SD=DTR]
           8 = Nitram Elite 500
               [CP=DTR] [OL=CTS] [LB=-DCD] [SD=???]
           9 = APC Back-UPS/Back-UPS Pro/Smart-UPS with 940-0023A cable
               [CP=none] [OL=-DCD] [LB=CTS] [SD=RTS]
           10 = Victron Lite with crack cable
               [CP=RTS] [OL=CTS] [LB=-DCD] [SD=DTR]
           11 = Powerware 3115
               [CP=DTR] [OL=-CTS] [LB=-DCD] [SD=ST]
           12 = APC Back-UPS Office with 940-0119A cable
               [CP=RTS] [OL=-CTS] [LB=DCD] [SD=DTR]
           13 = RPT Repoteck RPT-800A/RPT-162A
               [CP=DTR+RTS] [OL=DCD] [LB=-CTS] [SD=ST]
           14 = Online P-series
               [CP=DTR] [OL=DCD] [LB=-CTS] [SD=RTS]
           15 = Powerware 5119, 5125
               [CP=DTR] [OL=CTS] [LB=-DCD] [SD=ST]
           16 = Nitram Elite 2002
               [CP=DTR+RTS] [OL=CTS] [LB=-DCD] [SD=???]
               [CP=DTR] [OL=-CTS] [LB=DCD] [SD=ST]
               Check docs/cables/powerware.txt
           21 = Generic RUPS 2000 (Megatec M2501 cable)
               [CP=RTS] [OL=CTS] [LB=-DCD] [SD=RTS+DTR]
           22 = Gamatronic All models with alarm interface (also CyberPower SL
               [CP=RTS] [OL=CTS] [LB=-DCD] [SD=DTR]


           Many different UPS companies make models with similar interfaces. The
           RUPS cable seems to be especially popular in the "power strip" variety
           of UPS found in office supply stores. If your UPS works with an entry
           in the table above, but the model or manufacturer information don't
           match, don't despair. You can fix that easily by using the mfr and
           model variables documented above in your ups.conf(5).


           If your UPS isn't listed above, you can try going through the list
           until you find one that works. There is a lot of cable and interface
           reuse in the UPS world, and you may find a match.
           To do this, first make sure nothing important is plugged into the
           outlets on the UPS, as you may inadvertently switch it off. Definitely
           make sure that the computer you're using is not plugged into that UPS.
           Plug in something small like a lamp so you know when power is being
           supplied to the outlets.
           Now, you can either attempt to make an educated guess based on the
           documentation your manufacturer has provided (if any), or just start
           going down the list.
       Step 1
           Pick a driver to try from the list (genericups -h) and go to step 2.
       Step 2
           Start the driver with the type you want to try -
               genericups -x upstype=n /dev/port
           Let upsd sync up (watch the syslog), and then run upsc to see what it
           found. If the STATUS is right (should be OL for on line), continue to
           Step 3, otherwise go back to step 1.
           Alternatively, you can run genericups in debug mode -
               genericups -DDDDD -x upstype=n /dev/port
           Wait for the UPS to start complaining about a low battery. Depending on
           the size of your UPS battery and the lamp's bulb, this could take
           awhile. It should start complaining audibly at some point. When this
           happens, STATUS should show "OB LB" within 15 seconds. If not, go to
           Step 1, otherwise continue to Step 5.
       Step 5
           So far: OL works, OB works, and LB works.
           With the UPS running on battery, run the genericups driver with the -k
           switch to shut it down.
               genericups -x upstype=n -k /dev/port
           If the UPS turns off the lamp, you're done. At this point, you have
           verified that the shutdown sequence actually does what you want. You
           can start using the genericups driver with this type number for normal
           You should use your findings to add a section to your ups.conf. Here is
           a quick example:
                       driver = genericups
                       port = /dev/ttyS0
                       upstype = 1
           Change the port and upstype values to match your system.


           If the above testing sequence fails, you will probably need to create a
           new entry to support your hardware. All UPS types are determined from
           the table in the genericups.h file in the source tree.
           On a standard 9 pin serial port, there are 6 lines that are used as the
           standard "high/low" signal levels. 4 of them are incoming (to the PC,
           from the UPS), and the other 2 are outgoing (to the UPS, from the PC).
           The other 3 are the receive/transmit lines and the ground.
           Be aware that many manufacturers remap pins within the cable. If you
           have any doubts, a quick check with a multimeter should confirm whether
           the cable is straight-through or not. Another thing to keep in mind is
           that some cables have electronics in them to do special things. Some
           have resistors and transistors on board to change behavior depending on
           what's being supplied by the PC.


           These have been contributed by users of this driver.
           The Centralion CL series may power down the load if the driver starts
           up with the UPS running on battery as the default line settings contain
           There is no way to reliably detect a contact-closure UPS. This means
           the driver will start up happily even if no UPS is detected. It also
           means that if the connection between the UPS and computer is
           interrupted, you may not be able to sense this in software.
           Most contact-closure UPSes will not power down the load if the line
           power is present. This can create a race when using slave upsmon(8)
           systems. See the upsmon(8) man page for more information.
           The solution to both of these problems is to upgrade to a smart
           protocol UPS of some kind that allows detection and proper load cycling
           on command.


       The core driver
       Internet resources
           The NUT (Network UPS Tools) home page:

    Network UPS Tools 10/09/2011 GENERICUPS(8)


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