Detailed Description
Original instructions
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Adjustment with Square Root (Standardized Range)
The SQRT parameter can be used to adjust an analog output value. The square root filter acts according to the following functions:
f(0) = 0, f(0.5) = 0.707, f(1) = 1.
Characteristic curve of the square root filter
Correction of the "Offset" (Zero Offset Compensation)
The OFFS_ADJ parameter can be used to modify (adjust) the calculated offset value of the CH_OUT output.
Correction of the automatically set value (OFFS_ADJ = 0) is not normally necessary.
Correction of "Range" (Gain)
The RNGE_ADJ parameter can be used to modify (adjust) the calculated gain of the output.
Correction of the automatically set value (RNGE_ADJ = 0) is not normally necessary.
Example
Structure with and without O_FILTER
The output channels OUT1 and OUT2 of the AMM090 are configured as 4...20 mA.
The inputs OFFS_ADJ and RNGE_ADJ of the O_FILTER function are not used. They are set to 0 by default.
These values apply for O_NORM_2 function block with O_FILTER SQRT=1:
Input values
(AMM090 OUT1)
Output values
(O_NORM_2)
4 mA
0
12 mA
0.25
15.3 mA
0.50
20 mA
1
These values apply for O_NORM_3 function block without O_FILTER:
Input values
(AMM090 IN3)
Output values
(O_PHYS_3)
4 mA
0
8 mA
0.25
12 mA
0.50
20 mA
1