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IMU383 Series User's Manual
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programmable alerts. Internal health and status are monitored and communicated in both
hardware and software. The ultimate indication of a fatal problem is the masterFail flag.
The masterStatus flag is a configurable indication that can be modified by the user. This flag is
asserted as a result of any asserted alert signals which have been enabled. See Advanced BIT
(Section 8) for details regarding the configuration of the masterStatus flags. Table 4 shows the
BIT definition and default settings for BIT programmable alerts in the unit.
Table 4 IMU383 Default BIT Status Definition
BITstatus Field
masterFail
HardwareError
comError
softwareError
Reserved
masterStatus
hardwareStatus
comStatus
softwareStatus
sensorStatus
Reserved
The unit also allows a user to configure the Status byte within the BIT message. To configure the
word, select the BIT Configuration tab from the Unit Configuration menu. The dialog box allows
selection of which status types to enable (hardware, software, sensor, and comm). In the case of
the unit, which has fewer features and options than other Acienna measurement products, the only
meaningful parameter is sensor over-range. It is recommended that users leave the default
configuration, which is sensorStatus enabled and flag on sensor over-range. The over-range only
applies to the rotational rate sensors. Because instantaneous acceleration levels due to vibration
can exceed the accelerometer sensor range in many applications, none of the IMU383 Series
products trigger over-range on accelerometer readings.
Doc# 7430-1398-01
Bits
Meaning
0
0 = normal, 1 = fatal error has occurred
1
0 = normal, 1= internal hardware error
2
0 = normal, 1 = communication error
3
0 = normal, 1 = internal software error
4:7
N/A
8
0 = nominal, 1 = Alert, Sensor Over Range
9
Disabled
10
Disabled
11
Disabled
12
0 = nominal, 1 = Sensor Over Range
13:15
N/A
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Category
BIT
BIT
BIT
BIT
N/A
Status
Status
Status
Status
Status
N/A
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