7 Jun
2009
7 Jun
'09
11:08 a.m.
On 7 Jun 2009 at 18:22, Tony Duell wrote:
For older/simpler UPSes, it's quite common for
that not to be a real
serial port, but just a collection of status lines (mains failed,
batteries getting low, etc) which can be read over the 'handshake'
inputs of an RS232 port.
That's probably the extent of it--there's a DIP switch group that I
imagine dictates what goes to what. But no UARTs or other signs of
intelligence.
--Chuck