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Appendix III: Parameters
Table 19: Transducer block parameters (continued)
Parameter
Mode
(R/W)
Description
The secondary value related to the sensor.
Subparameter
Mode
(R/W)
Description
A numerical quantity entered by a user or calculated
by an algorithm.
Digital transducers, unlike their analog versions, can
detect faults that make the measurement bad or
prevent the actuator from responding. This
additional, valuable information will be passed along
STATUS
with each transmission of a data value in the form of
a status attribute. Choices are made in the
QUALITY, SUBSTATUS, and Limits subparameters.
Choices are:

Bad
QUALITY

Uncertain

Good_Noncascade

Good_Cascade
Choices are:

NonSpecific

LastUsableValue

SubstituteValue
SUBSTATUS

InitialValue

SensorConversionNotAccurate

EngUnitRangeViolation

Subnormal
Choices are:

NotLimited
LIMITS

LowLimited

HighLimited

Constant
Specify the span and units for the auxiliary input channel.
VALUE
SECONDARY_VALUE
In Process TB
Subparameter
EU_100
EU_0
SECONDARY_VALUE_RANGE
In Process TB
UNITS_INDEX
DECIMAL
W
W
W
W
W
Mode
(R/W)
Description
The engineering unit value that represents the upper
end of range of the associated block parameter.
The engineering unit value that represents the lower
end of range of the associated block parameter.
Device Description (DD) units code index for the
engineering unit descriptor for the associated block
value. This unit must match the AO block units.
Choices are:

Counts per Second

Unitless
The number of digits to the right of the decimal point
that should be used by an interface device in
displaying the specified parameter.
W
W
W
W
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LFXG-D Technical Reference Manual
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