
1250SM0904R10/09 C-Bus™ Basic Programming
10/2009 C-Bus™ Products Training Course
© 2009 Schneider Electric. All Rights Reserved. 123
Since a PIR sensor does not have buttons, specific functions are
pre-programmed to control group addresses. These function are highlighted
in the table below.
Parameter Description
Motion in Light (ML) When movement is detected, this parameter will continually retrigger
a running timer, when the ambient light in the room is above the
threshold set by the light level trimpot.
Motion in Dark (MD) When movement is detected, this parameter will turn on a group
address and continually retrigger a running timer, when the ambient
light in the room is below the threshold set by the light level trimpot.
Sunrise to Sunset
(SS)
This parameter will turn on a group address for a specified period of
time, once the light level falls below the threshold set by the light
level trimpot.
Any Motion (AM) This parameter will continually pulse the group address ON and
OFF with each time movement is detected.
Table 44 - PIR sensor functions
The Use Same Response Setting as Motion in Light parameter links the
Motion In Light and Motion in Dark parameters. These two functions are
linked because once motion is detected in the dark, the light will turn on.
Once the light is on, the ambient light level at the PIR sensor will no longer
be dark, so the sensor will continue to detect motion in light.
PIR Function Details
Once you have assigned a group address to the ‘Motion In Light’ and
‘Motion in Dark’ parameters, click on the appropriate Function Details button
to set the behaviour of the PIR’s timer. This will allow you to configure the:
duration of the timer
Expiry function.
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