5 | Operation FISCHER Mess- und Regeltechnik GmbH
56 BA_EN_DE90
Each support point is stated by a value pair comprising the Input value x
and Display value x . The index x states the number of the value pair. At
least two value pairs always need to be stated. The maximum number of value
pairs is 30.
The first value pair is assigned to the start of the measuring range and the last
value pair to the end of the measuring range. There is a linear interpolation of
the characteristic between two values. The input values must either be continu-
ously rising or falling. This is not mandatory for the assigned display values.
For example: The table should have 7 value pairs
(4)
. Of the input signal, the range 20 … 80
Pa should be used. The basic measuring range is 0…100 Pa. The display
should display in the start of the measuring range 20 Pa and at the end of the
measuring range 80 Pa.
Basic measuring range 0…100 Pa
Measuring range 20 … 80 Pa
Display range 10 … 70 Pa
Output signal 0…20 mA
The value point 5 should be displayed so that the output delivers 12 mA. The
following values are then entered in the menu Table C1 :
Input E1 O2 O3 O4 O5 O5 O6 O7
Value [Pa] 20 30 40 50 60 56 70 80
Display A1 A2 A3 A4 A5 A5 A6 A7
Value [Pa] 10 20 30 40 50 46 60 70
Output [mA] 0 3.33 6.66 10 13.33 12 16.66 20
Input
Display
0
E1 E2 E3 E4 E5 E6 E7
A1
A7
A2
A3
A4
A5
A6
1
2
3
4
6
7
5
MA ME
Value pair 5
A5
E5
Output
0 mA
20 mA
10 mA
12 mA
Fig.72: Table function
(4)
input values are abbreviated with E1…E7 and display values with A1…A7
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