3.3 AO-01 Module Settings
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3.3.2 Setting the Offset/Gain
The offset/gain settings do not usually have to be adjusted. The AO-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 fol-
lowing procedure to adjust the offset/gain.
1.
After selecting the channel number in the AO-01 Configuration Window, select
Set
and the
Offset/
Gain
.
The
Set Offset/Gain
box will be displayed.
2.
Set the output register to 0 (0 V), and measure the output voltage of the AO1 Module.
3.
Calculate the offset of the output voltage using the following equation. Enter the result in the
Offset
Input
box in the
Set
Offset/Gain
box.
Offset value =
AO1
×
(
−
3127.6) (round off below decimal point)
4.
Click the
OK
button to save the offset value, and the dialog box will close.
5.
Repeat step 1 to view the
Set Offset/Gain
box.
6.
Set the output register to 31276 (10 V), and measure the output voltage of the AO2 module.
7.
Calculate the gain of the output voltage using the following equation. Enter the result in the Gain Input
box in the
Set
Offset/Gain
box.
・
If the voltage of AO2 is less than 10 volts,
Gain = 10.0
÷
AO2
(Round to three decimal places.)
・
If the voltage of AO2 is greater than 10 volts, gradually reduce the value of the output register from
31276 until the output voltage 10 V. The value of the output register if the output voltage is approxi-
mately 10 V is REG1.
Gain = REG1
÷
31276.0
(Round to three decimals places.)
