Digi-Star Analog Output EZIII - Manual (Page 7)

Operators Manual
D3708-US Rev D 7
Calculating the Output Value
If the “Analog Output Gross Weight” is between “LOW WT” and
“HIGHWT”
, the following calculation determines the Analog Output
Signal:
4mA + (16mA*(Analog Output Gross Weight – “Low Wt”)
(“HIGHWT” – “Low Wt”)
The minimum analog output value is 4mA or 0V.
If the “Analog Output Gross Weight” is less than “Low Wt”, the
Analog Output Signal will be 4mA or 0V.
The maximum analog output value is 20mA or 5V.
If the “Analog Output Gross Weight” is greater than “HighWt”, the
Analog Output Signal will be 20mA or 5V.
Special Circumstances
1. The analog output will hold its present level when operator enters
the menus to change the scale’s setup parameters.
2. The analog output will hold its present level during indicator
temperature calibration process (which can take up to 3 seconds).
Temperature calibration normally occurs every 20 minutes, but
occurs more often during the first 20 minutes of operation.
3. When D.A.N. 243 = “0-20mA” 4-20mA output signal with 0mA in
an error situation.
When D.A.N. 243=" 4-20mA" 4-20mA output signal without error
signal.
When D.A.N. 243="0- 5V" 0-5V output signal without error
signal.
4. An error condition exists if “zerout” has not been set.
5. An error condition exists if “low wt” is larger than the “High Wt”.
6. An error condition exists if the scale has an analog error
(“AD ERR”).