This variable indicates the number of decimal
places of precision in fixed-point
sensor values reported by entSensorValue.
This variable is set to 0 when entSensorType
is not a fixed-point type: e.g.'percentRH(9)',
'rpm(10)', 'cmm(11)', or 'truthvalue(12)'.
This variable is set by the agent at start-up
and the value does not change during operation.