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Reference Manual
00809-0100-4021, Rev GC
Section 4: F
OUNDATION
fieldbus Configuration
April 2014
Foundation™ fieldbus configuration
4.9.2
Configure the AI block
A minimum of four parameters are required to configure the AI block. The parameters are
described below, with example configurations shown at the end of this section.
CHANNEL
Select the channel that corresponds to the desired sensor measurement .
L_TYPE
The L_TYPE parameter defines the relationship of the sensor measurement (sensor
temperature) to the desired output temperature of the AI block. The relationship can be direct
or indirect.
Direct
Select direct when the desired output will be the same as the sensor measurement (sensor
temperature).
Indirect
Select indirect when the desired output is a calculated measurement based on the sensor
measurement (e.g. ohm or mV). The relationship between the sensor measurement and the
calculated measurement will be linear.
XD_SCALE and OUT_SCALE
The XD_SCALE and OUT_SCALE each include four parameters: 0%, 100%, engineering units, and
precision (decimal point). Set these based on the L_TYPE:
L_TYPE is Direct
When the desired output is the measured variable, set the XD_SCALE to represent the operating
range of the process. Set OUT_SCALE to match XD_SCALE.
Channel
Measurement
1
Input 1
2
Input 2
3
Differential
4
Terminal (Body) Temperature
5
Input 1 Minimum Value
6
Input 1 Maximum Value
7
Input 2 Minimum Values
8
Input 2 Maximum Values
9
Differential Minimum Value
10
Differential Maximum Value
11
Terminal (Body) Minimum Value
12
Terminal (Body) Maximum Value
13
Hot Backup Value
Содержание Rosemount
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