3 percent of fsr – ADLINK ND-6024 User Manual

Page 59

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Data Format

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4.3 Percent of FSR

The date is in percent of FSR(Full Scale Range) when the bit 1 and 0 of the
configuration register are ‘01’. The data string is composited by 6 characters.
Because the output of ND-6021 is unipolar, the value is always positive.

The value is unit-less and depends on the output range setting too.

• Set bit 1 and bit 0 of data format variable to “01” means the data is

represented in percent of FSR.

• Data string is fixed length of 6 characters. The value is composed of

five decimal digits with a decimal fixed point.

• Three digits present the integer part and two digits present the fraction

• Maximum resolution is 0.2%.

Example 4.3.1 :

• If the output range is set as 0 to 20 mA

• The desired analog output current is 10 mA

The data value should be : 050.00<CR>

10 mA / 20 mA = 50.00 %

Example 4.3.2 :

• If the output range is set as 4 to 20 mA

• The desired analog output current is 10 mA

The data value should be : 037.50<CR>

(10 mA - 4 mA ) / (20 mA - 4mA) = 37.50 %

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