Omron M1 Series User Manual page 532

7 Other Functions
Input Terminal [AI1] Po-
larity Selection (C35) da-
ta
0
1
Input Terminal [AI2] Op-
eration Selection (AII)
(C40) data
0
1
10
11
Input Terminal [AI2] Po-
larity Selection (AIV)
(C45) data
0
1
Offsets (C31, C36, C41)
Set an offset with respect to the analog input voltage/current. It is also possible to correct the offset of
signals from external equipment.
Filter (C33, C38, C43)
Set the filter time constant with respect to the analog input voltage/current. As response slows down
when a large time constant is set, take the response speed of the equipment into consideration when
determining the time constant. When noise causes the input voltage to fluctuate, increase the time
constant.
Scaling of Analog Input Signal
The relationship between analog input signals and digital values for each individual analog input range
is as follows.
7-40
Function
Bipolar (-10 to 10 V)
Unipolar (0 to 10 V)
Function
4 to 20mA Unipolar (limit-
ed to less than 0)
0 to 20mA Unipolar
4 to 20mA Bipolar (nega-
tive number display)
0 to 20mA Bipolar
Function
Bipolar (0 to 10 V)
Unipolar (0 to 10 V)
Description
When analog signals are changed to digital values af-
ter application of bias, values less than 0% are ena-
bled as minus values.
When analog signals are changed to digital values af-
ter application of bias, values less than 0% are limited
at 0%.
Description
When analog signals are changed to digital values af-
ter application of bias, values less than 0% are limited
at 0%.
When analog signals are changed to digital values af-
ter application of bias, values less than 0% are ena-
bled as minus values.
Description
When analog signals are changed to digital values af-
ter application of bias, values less than 0% are ena-
bled as minus values.
When analog signals are changed to digital values af-
ter application of bias, values less than 0% are limited
at 0%.
M1 Series Standard Type User's Manual (I669)