ADLINK ND-6021 - Manual (Page 58)

52 • Data Format
4.2 Engineering Units
The date is in engineering unit when the bit 1 and 0 of the configuration register
are ‘00’. The data string is composited by 6 characters. Because the output of
ND-6021 is unipolar, the value is always positive.
The meaning of the value depends on the output range setting too. When the
output range is set to 0~10V, the unit of the value is in ‘Volts’. When the output
range is set to 0~20mA or 4~20mA, the unit of the value is in ‘mA’.
• Set bit 1 and bit 0 of data format variable to “00” means the data is
represented in engineering units
• Data string is fixed length of 6 characters. The value is composed of
five decimal digits with a decimal fixed point
• Two digits present the integer part and three present the fraction
Example 4.2.1:
• If the output range is set as 0 to 20 mA
• The desired analog output value is +5.678 mA
The data value should be : 05.678
Example 4.2.2:
• If the output range is set as 0 to 10 V
• The desired analog output value is +2.345 V
The data value should be : 02.345