Omron DRT2 Series Operation Manual page 168

Analog Input Terminals
User Scaling
Offset Compensation
selected, scaling is performed according to the range used, as shown in the
following table.
Input 0 to 5 V
range
100% 5,000 mV
0% 0000 mV
Off-wire ---
Analog input values (count values) are scaled to user-defined values. The
conversion values for 100% and 0% are set using the Configurator.
Input 0 to 5 V
range
100% Set using Configurator (–28,000 to 28,000)
0% Set using Configurator (–28,000 to 28,000)
Off-wire ---
Value for 100% set by user
(Scaling point 2)
Value for 0% set by user
(Scaling point 1)
Note Reverse scaling, where the 0% scaling value is higher than the 100% scaling
value, is also supported.
Scaling analog input values of Linear Sensors to distances produces mount-
ing error in the Sensor. Offset compensation compensates for error that
occurs during scaling. The offset amount is added to the scaled line before
processing, as shown in the following diagram. The offset (error) value can be
input between 28,000 to 28,000, but make sure that underflow or overflow
–
does not occur. The High Limit is 7FFE hex and the Low Limit is 8000 hex.
Note The offset value can be set even when using default scaling.
0 to 10 V 1 to 5 V
10,000 5,000 mV 10,000
mV mV
0000 mV 1,000 mV –10,000
mV
--- 7FFF hex ---
0 to 10 V 1 to 5 V
--- 7FFF hex ---
Scaling value
Conversion
0% 1
Section 7-3
10 to 0 to 20 4 to 20
–
mA
10 V
µ
20,000 A 20,000
µ
0000 A 4,000
--- 7FFF hex
10 to 0 to 20 4 to 20
–
mA
10 V
--- 7FFF hex
Input signal range
00%
mA
µ
A
µ
A
mA
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