104
6
Useful Functions
104
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Chapter
6
6-13.
Using the D/A converter interface (option)
D/A converter is an interface to output the weight value as an electrical signal. The converter can
output a current (4mA to 20mA) proportional to the weight value. The over range is ±5% of the full
scale. The center line has a plus polarity.
6-13-1.
How to adjust D/A zero/gain
D/A converter of F701+ sets the weight value which outputs 4mA current and the weight value which
outputs 20mA current respectively to obtain an analog output. Input for each setting value and selection
of D/A output mode is performed in setting mode 4.
6-13-2.
Settings related to D/A converter
■
D/A output mode
Select the output mode. Test mode is used when
making fine adjustments to zero/gain.
■
D/A zero output weight value
Set the weight value which outputs 4mA. The
default value is "0".
■
D/A full scale setting
Set the range for weight value which outputs
20mA. The default value is "10000".
6-13-3.
D/A resolution
The resolution of the D/A converter is 1/10000 for 4 to 20mA. Thus, the minimum unit of current is:
- Current (20
－
4mA) x 1/10000 = 1.6μA.
In addition, the minimum unit of weight value is:
- Weight value (D/A full scale setting value) x 1/10000.
Weight value
(mA)
20
4
D/A zero output weight
Resolution1/10000
D/A full scale value
Current
(4mA)
(20mA)
[D/A output mode] (setting mode 4-1)
1: Net weight
0: Gross weight
Output weight mode
2: 20mA fixed output
1: 4mA fixed output
0: Weight value linked
Test mode
[D/A zero output weight value] (setting mode 4-2)
(Input range: 0 to 99998)
[D/A full scale settings] (setting mode 4-3)
(Input range: 1 to 99999)
Summary of Contents for F701+
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