Waking a Sleeping IMU
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Waking a Sleeping IMU
When an IMU has not communicated with the arm for more than 30 minutes, the
IMU reverts to a sleep mode to conserve the battery. When in sleep mode the IMU
is not listening for arm communication.
As a result, if the IMU is in sleep mode when the arm is turned on, it will not
connect with the arm. This results in a sweeping pattern on the Grip Select LEDs
while the arm tries to connect with the IMUs. If the arm doesn’t connect with the
IMUs after about 10 seconds, an “IMU Comm Lost” fault will occur. Having the
client shake their foot with the IMU attached wakes the IMU from sleep mode so
that the IMU is ready to communicate with the arm once the arm system is powered
on. See
for details on switching between sets of IMUs or
for troubleshooting information.
An IMU that has been shaken awake is waiting to communicate with the arm. IMUs
that are not actively communicating with an arm blink the battery state of charge
LED whenever they are shaken, regardless of whether they are sleeping or not.
The wireless IMUs do not contain an ON/OFF button. An IMU that is awake
and set up to communicate with an arm will do so once the arm is powered
ON
. See
.
After shaking the IMU awake if it does not communicate with the arm within
five (5) minutes the IMU reverts back to sleep mode to conserve the battery
charge.
