| SensorDataScale |
enumeration |
International System of Units (SI) prefixes. |
| SensorDataType |
enumeration |
sensor measurement data types. valid values are:
other(1): a measure other than those listed below
unknown(2): unknown measurement, or
arbitrary, relative numbers
voltsAC(3): electric potential
voltsDC(4): electric potential
amperes(5): electric current
watts(6): power
hertz(7): frequency
celsius(8): temperature
percentRH(9): percent relative humidity
rpm(10): shaft revolutions per minute
cmm(11),: cubic meters per minute (airflow)
truthvalue(12): value takes { true(1), false(2) }
specialEnum(13): value takes user defined enumerated values
dBm(14): dB relative to 1mW of power |
| SensorPrecision |
int32 |
When in the range 1 to 9, SensorPrecision is the number
of decimal places in the fractional part of
a SensorValue fixed-point number. When in the range -8 to
-1, SensorPrecision is the number of accurate digits in
a SensorValue fixed-point number.
SensorPrecision is 0 for non-fixed-point numbers.
Agent implementors must choose a value for SensorPrecision
so that the precision and accuracy of a SensorValue is
correctly indicated.
For example, a temperature sensor that can measure 0o to
100o C in 0.1o increments, +/- 0.05o, would have a
SensorPrecision of 1, a SensorDataScale of units(0), and a
SensorValue ranging from 0 to 1000.
The SensorValue would be interpreted as (degrees C * 10).
If that temperature sensor's precision were 0.1o but its
accuracy were only +/- 0.5o, then the SensorPrecision would
be 0. The SensorValue would be interpreted as degrees C.
Another example: a fan rotation speed sensor that measures RPM
from 0 to 10,000 in 100 RPM increments, with an accuracy of
+50/-37 RPM, would have a SensorPrecision of -2, a
SensorDataScale of units(9), and a SensorValue ranging from 0
to 10000. The 10s and 1s digits of SensorValue would always
be 0. |
| SensorStatus |
enumeration |
Indicates the operational status of the sensor.
ok(1) means the agent can read the sensor
value.
unavailable(2) means that the agent presently
can not report the sensor value.
nonoperational(3) means that the agent believes
the sensor is broken. The sensor could have a
hard failure (disconnected wire), or a soft failure
such as out-of-range, jittery, or wildly fluctuating
readings. |
| SensorThresholdRelation |
enumeration |
sensor threshold relational operator types. valid values are:
lessThan(1): if the sensor value is less than
the threshold value
lessOrEqual(2): if the sensor value is less than or equal to
the threshold value
greaterThan(3): if the sensor value is greater than
the threshold value
greaterOrEqual(4): if the sensor value is greater than or equal
to the threshold value
equalTo(5): if the sensor value is equal to
the threshold value
notEqualTo(6): if the sensor value is not equal to
the threshold value |
| SensorThresholdSeverity |
enumeration |
sensor threshold severity. Valid values are:
other(1) : a severity other than those listed below.
minor(10) : Minor Problem threshold.
major(20) : Major Problem threshold.
critical(30): Critical problem threshold. A system might shut
down the sensor associated FRU automatically if
the sensor value reach the critical problem
threshold. |
| SensorValue |
int32 |
For sensors that measure voltsAC, voltsDC,
amperes, watts, hertz, celsius, cmm
this item is a fixed point number ranging from
-999,999,999 to +999,999,999. Use the value
-1000000000 to indicate underflow. Use the value
+1000000000 to indicate overflow. Use SensorPrecision
to indicate how many fractional digits the SensorValue
has.
For sensors that measure percentRH, this item
is a number ranging from 0 to 100.
For sensors that measure rpm, this item
can take only nonnegative values, 0..999999999.
For sensors of type truthvalue, this item
can take only two values: true(1), false(2).
For sensors of type specialEnum, this item
can take any value in the range (-1000000000..1000000000),
but the meaning of each value is specific to the
sensor.
For sensors of type other and unknown,
this item can take any value in the range
(-1000000000..1000000000), but the meaning of the values
are specific to the sensor.
Use Entity-MIB entPhysicalTable.entPhysicalVendorType
to learn about the sensor type. |
| SensorValueUpdateRate |
int32 |
Indicates the interval in seconds between updates to the
sensor's value.
The value zero indicates:
- the sensor value is updated on demand (when polled by the
agent for a get-request),
- or when the sensor value changes (event-driven),
- or the agent does not know the rate |