Micropilot M FMR 240 with Foundation Fieldbus
Operation
E Hauser
53
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
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 transducer 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 transducer block value bypasses the scaling functions
– INDIRECT:the transducer block value is fed through the linear scaling functions
– INDIRECT SQRT: the transducer block value is fed through the square root scaling
functions
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
+
−
×
=
