2.3 AI-01 Module Settings
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2.3.2 Setting the Offset/Gain
The offset/gain settings do not usually have to be adjusted. The AI-01 Module has been adjusted before shipment so the
appropriate value is input for the specified voltage or current. If more precise adjustments are required, use the follow-
ing procedure to adjust the offset/gain.
1.
After selecting the channel number in the AI-01 Configuration window, select
Set
and then
Offset/
Gain
.
The
Set Offset/Gain
box will be displayed.
2.
The voltage of the external device can be set to 0 V, 5 V, or 10 V. After changing the voltage, the cur-
rent value displayed for the AI-01 Module will also change. Adjust the offset/gain accordingly so they
are in accordance with the current value displayed for the AI-01 Module. Then click the OK button.
3.
Repeat steps 1 and 2 for all channels to be used.
The offset/gain adapted value will be stored in the input register (I register):
Input register = A/D conversion value
×
Gain
＋
Offset
The default values of the offset and gain are as follows.
Offset:
0000
Gain: 1.000
If using the default values, the Input register value equals the A/D conversion value.
