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 USB frontend to a
traditional contact-closure interface, which translates into only three states
in ups.status:
OL,
OB and
OB LB. See also
genericups(8).
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)
Internet resources:¶
The NUT (Network UPS Tools) home page:
http://www.networkupstools.org/