Parameter No. Function name Data
Default da-
ta
Unit
Bias adjustment on 1st frequency reference
3004Hex-13Hex
Input Terminal [AI1, AI2] Bias for
1st Frequency Command
-100.00 to 100.00 0.00 %
3006Hex-33Hex
Input Terminal [AI1, AI2] Bias
Analog Input for 1st Frequency
Command
0.00 to 100.00 0.00 %
Bias adjustment on 2nd frequency reference
3006Hex-38Hex
Input Terminal [AI1] Bias (Com-
mand)
-200.00 to 200.00 0.00 %
3006Hex-39Hex
Input Terminal [AI1] Bias (Ana-
log Input)
0.00 to 100.00 0.00 %
Polarity Selection (3006Hex-24Hex)
Set the input range of analog input voltage.
Input Terminal [AI1]
Polarity Selection
(3006Hex-24Hex) da-
ta
Function Description
0 Bipolar (-10 to 10 V)
When analog signals are changed to digital values after ap-
plication of bias, values less than 0% are enabled as minus
values.
1 Unipolar (0 to 10 V)　
When analog signals are changed to digital values after ap-
plication of bias, values less than 0% are limited at 0%.
Offset (3006Hex-20Hex)
Set an offset with respect to the analog input voltage. It is also possible to correct the offset of signals
from external equipment.
Filter (3006Hex-22Hex)
Set the filter time constant with respect to the analog input voltage. As response slows down when a
large time constant is set, take the response speed of the equipment into consideration when deter-
mining the time constant. When noise causes the input voltage to fluctuate, increase the time con-
stant.
Scaling of Analog Input Signal
The relationship between analog input signals and digital values for each individual analog input range
is as follows.
8 Other Functions
8-35
M1 Series EtherCAT Type User’s Manual (I670)
8-3 Analog I/O Settings
8
8-3-2 Analog Input Adjustment Function
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