
Figure J-3: Analog Input Function Block Timing Diagram
$
%
&
)
(
'
*
A. FIELD_VAL
B. PV_FTIME
C. 63% of Change
D. PV
E. OUT (mode in auto)
F. OUT (mode in man)
G. Time (seconds)
J.4
Signal conversion
You can set the signal conversion type with the Linearization Type (L_TYPE) parameter.
You can view the converted signal (in percent of XD_SCALE) through the FIELD_VAL
parameter.
You can choose from direct or indirect signal conversion with the L_TYPE parameter.
FIELD_VAL = 100 × Channel Value − EU*@0%
EU*@100% − EU*@0%
* XD_SCALE values
Direct
Direct signal conversion allows the signal to pass through the accessed channel input
value (or the simulated value when simulation is enabled).
PV = Channel Value
Indirect
Indirect signal conversion converts the signal linearly to the accessed channel input value
(or the simulated value when simulation is enabled) from its specified range (XD_SCALE)
to the range and units of the PV and OUT parameters (OUT_SCALE).
PV = FIELD_VAL
100
× EU**@100% − EU**@0% + EU**@0%
Analog-Input Block
Reference Manual
April 2019
00809-0100-4530
462
Rosemount 5300 Level Transmitter
Содержание Rosemount 5300 Series
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