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5.2 Operational Modes
FMB630 is designed to operate in two different modes: Normal Mode and Sleep Modes
(Standby mode). Normal Mode means that FMB630 is fully functional and performs all the
functionality mentioned above in Operational principals section.
Sleep Modes are designed to dramatically reduce power consumption. It is a separate
mode and certain conditions must be fulfilled to switch from Normal operation and enter this
mode. Detailed information about how FMB630 enters/exits Sleep Modes and what functions
does FMB630 perform while in this mode can be found in chapter 11.
5.3 Accelerometer
FMB630 has a built in 3 axis accelerometer which allows the device to indicate if vehicle is
moving or not, as well as measure acceleration. Accelerometer sensitivity can be configured – it
has 2 configurable global parameters: start and stop timeouts that define time intervals in
seconds. To indicate that a vehicle is moving, FMB630 constantly (in frequency of 50 Hz) checks
for g force change on X, Y and Z axes. If measured g force keeps exceeding the set limit (it is not
configurable) for defined time interval in "Movement Filter Start" field (Figure 20), then the
vehicle is considered as moving. Same settings for idle indication apply – if g force change is less
than the set limit for time interval defined in "Movement Filter Stop" field then the vehicle is
considered as idle (not moving).
Example for default parameters: Movement Filter Start = 1 and Movement Filter Stop =
200 means that movement will be detected after 1 second and stop will be detected after 200
seconds of inactivity.
5.4 Virtual Odometer
Virtual odometer is used to calculate travelled distance in FMB630 as a separate I/O
element. When FMB630 detects movement, it starts counting distance using GPS signal: every
second it checks current location and calculates distance between current and previous point. It
keeps adding these intervals until it is time to make a record, then FMB630 records its location
and adds odometer value, which is equal to the sum of all distances, measured every second.
When record is made, odometer resets to zero and distance calculation starts all over again.
Virtual odometer as an I/O element can be also used with Trip feature, read chapter
6.3.6.3.
5.5 Profiles
FMB630 has 4 profiles saved in Flash memory of the module. Every profile has a list of
parameters, which enables FMB630 to operate in different modes while using different profiles.
Figure 20 Accelerometer settings
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