Any of
the
X10 controllers can trigger a
complete irrigation sequence, cycling
through all eight zones. When one zone
times out, the next one starts. In this
instance the time settings for each zone
are stored internally. The Rain8
provides for two independent schedules,
each with its own X10 trigger assignment
and run times.
This mode
requires the use of a home automation
program (such as HAL) to generate X10
power line carrier signals to start and
stop each zone. The actual timing
controls, in this mode, are located in
this PC program. This provides an easy
means of adjusting run times for
seasonal irrigation changes. As a
safeguard, the user can set the maximum
"valve on" time for each zone anywhere
from 1 to 240 minutes. This guarantees
that the sprinkler valve will turn off
even in the absence of an X10 OFF
command. As each sprinkler valve has its
own default setting, this guarantees a
minimum of wasted water in the advent of
a lost X10 signal. Another safeguard to
help in the conservation of water is the
inter lock feature. Only one sprinkler
valve is allowed on at a time in this
mode.