[plug] UPS's with Linux support

Shackleton, Kevin kshackleton at agric.wa.gov.au
Fri Mar 12 09:29:44 WST 1999


Not the data line - it won't stay at +12 V, just flickers there when there's
data.  Must be a handshaking line (RTS, return on CTS?)

K.

> ----------
> From: 	Paul Wilson
> Linux has to provide a signal to the UPS (via Tx I think), and if the
> mains disappears,
> the UPS switches the signal back to the server (using Rx).  That's it !
> 


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