[Nut-upsuser] nut and Tripp Lite smart500rt1u on Scientific Linux 7

[Matthew Sund]

I installed nut from the epel repository on Scientific Linux 7. I would like to get my smart500rt1u working, but # upsc smart500 at localhost gives the following output:

battery.voltage.nominal: 0
device.mfr: Tripp Lite
device.model: SMART500RT1U
device.type: ups
driver.name: tripplite_usb
driver.parameter.pollinterval: 5
driver.parameter.port: auto
driver.version: 2.7.2
driver.version.internal: 0.20
input.voltage.nominal: 120
ups.debug.0: 30 05 58 58 58 58 0d '0.XXXX.'
ups.debug.D: 00 7c 00 8b 0d 00 00 '.......'
ups.debug.L: 1d 00 00 07 58 58 0d '....XX.'
ups.debug.load_banks: 0
ups.debug.M: 00 00 00 7e 0d 00 00 '.......'
ups.debug.P: 30 30 35 30 30 58 0d '00500X.'
ups.debug.S: 01 04 00 00 64 00 0d '....d..'
ups.debug.T: 25 00 02 58 01 58 0d '...X.X.'
ups.debug.V: 02 00 0c 01 58 58 0d '....XX.'
ups.delay.shutdown: 64
ups.firmware: F334400
ups.firmware.aux: protocol 3005
ups.id: 0
ups.mfr: Tripp Lite
ups.model: SMART500RT1U
ups.power.nominal: 500
ups.productid: 0001
ups.status: 
ups.vendorid: 09ae


As you can see, the ups.status line is blank, and there is no battery voltage.  If I try to have the machine automatically shut down, I would need to use ups.status, according to the manual.  I have had the stale data error as well.  
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