NAME

       nutdrv_atcl_usb - Driver for 'ATCL FOR UPS' equipment

NOTE

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

SUPPORTED HARDWARE

       This driver is for UPS hardware which identifies itself as USB idVendor 0001 and idProduct 0000, and
       iManufacturer ATCL FOR UPS. Known manufacturers include Kanji and Plexus. The UPS interface seems to be a
       generic USB-to-serial chip, and for hardware manufactured by Kanji and Plexus, the microcontroller
       appears to emulate a traditional contact-closure interface. This translates into only three states in
       ups.status: OL, OB and OB LB (similar to genericups(8)), with no other dynamic status values reported.
       Note that these USB identifiers (including the iManufacturer string) have also been seen on devices that
       are supported by the fuji subdriver of nutdrv_qx(8).

EXTRA ARGUMENTS

       This driver supports the following optional setting:

       vendor=name
           In case your iManufacturer (Vendor) string does not exactly match ATCL FOR UPS, you may provide an
           alternate string here. Note that a more likely case is that your device is handled by another driver
           for 0001:0000 devices, such as nutdrv_qx(8).

BUGS

       The UPS returns the same code for "load power is off" as for "on line power". This condition will not be
       observed if the NUT master is powered by the UPS, but may be an issue if the UPS is monitored by a remote
       system.

       The time between the shutdown command and removal of power seems to be fixed at 30 seconds. Ensure that
       the NUT shutdown script is invoked as late as possible in the shutdown procedure (in case some services
       take longer than others to clean up).

       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
       this problem is to upgrade to a smart protocol UPS of some kind that allows detection and proper load
       cycling on command.

AUTHORS

       Charles Lepple

SEE ALSO

   The core driver:
       nutupsdrv(8)

   The generic serial driver:
       genericups(8)

   The Qx driver:
       nutdrv_qx(8) (fuji subdriver)

   Internet resources:
       The NUT (Network UPS Tools) home page: http://www.networkupstools.org/

Network UPS Tools 2.7.3.                           03/09/2016                                 NUTDRV_ATCL_USB(8)