Universal Devices ISY-994i Series, User Manual

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leaves the user in the dark until additional motion is detected, which causes the sensor to
once again send On.
The solution is to listen only for the motion sensor's On command, and completely ignore
its Off command, allowing ISY to do the timing and re-triggering:
If
X10 'M1/On (3)' is Received
Then
Set 'Hall Light' On
Wait 3 minutes
Set 'Hall Light' Off
Else
- No Actions - (To add one, press 'Action')
Each time motion is detected, the program will restart, so the light will not be turned off
until the programmed amount of time has elapsed after the last motion was detected.
An additional benefit of allowing ISY to do the timing, is that should the On time need to be
changed for a number of sensors, it becomes simply a matter of altering the program lines,
rather than going around to each sensor and physically changing its programmed On time.
It should be noted that the motion sensor itself will continue to send an Off command each
time its timer expires (every three minutes in the above example), causing unnecessary RF
and power-line traffic, with the attendant possibility of collisions. Therefore, when allowing
ISY to do the timing, the motion sensor's timer should be set to its longest possible value.
For many X-10 motion sensors this is 256 minutes, or approximately four and a quarter
hours.
Speaking of unnecessary power-line traffic, the previous example will send the INSTEON
On command every time motion is detected, which is very undesirable. This can be avoided
by the use of two small programs: