Appendix
Micropilot M FMR231 with FOUNDATION Fieldbus
106
Hauser
11.7.3
Output values
11.7.4
Scaling parameters
The relationship between the output values and scaling paramaters for the Micropilot M is as
follows:
The L_TYPE parameter influences the signal conversion:
• Direct:
• Indirect:
• Indirect square root:
Parameter
Description
PV
Either the primary/secondary Sensor block value used to execute the block or a process
value associated with it. Comprises value and status.
OUT
The primary value output as a result of executing the analog input block. Comprises
value and status.
FIELD_VALUE
Raw value of field device in % of PV range with a status reflecting the Sensor condition
before signal characterisation L_Type or filtering V_TIME. Comprises value and status.
Parameter
Description
CHANNEL
Selects the measured value to be input to the analogue input block
– 0 = no channel defined
– 1 = primary value: measured level/volume
– 2 = secondary value: measured distance
XD_SCALE
Scales the Sensor block value in the required engineering units (EU).
OUT_SCALE
Scales the output value in the required engineering units (EU).
L_TYPE
Sets the linearization type:
– DIRECT: the Sensor block value bypasses the scaling functions
– INDIRECT:the Sensor block value is fed through the linear scaling functions
– INDIRECT SQRT: the Sensor block value is fed through the square root scaling func-
tions
MIN
_
SCALE
_
XD
MAX
_
SCALE
_
XD
MIN
_
SCALE
_
XD
VALUE
_
CHANNEL
100
VAL
_
FIELD
−
−
×
=
PV = CHANNEL_VALUE
(
)
MIN
_
SCALE
_
OUT
MIN
_
SCALE
_
OUT
MAX
_
SCALE
_
OUT
100
VALUE
_
FIELD
PV
+
−
×
=
(
)
MIN
_
SCALE
_
OUT
MIN
_
SCALE
_
OUT
MAX
_
SCALE
_
OUT
100
VALUE
_
FIELD
PV
+
−
×
=
Summary of Contents for Micropilot M FMR231
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