Omron NX-AD series User Manual page 121

Input Range: 4 to 20 mA
1/8000 Resolution
A current of 4 to 20 mA is converted to a signed integer value (0 to 8000).
The input current range for which conversion is possible is 3.2 to 20.8 mA and here the converted
value is a signed integer value (-400 to +8400).
If the input value falls below the input range such as for a disconnection, and the input current is less
than 1.2 mA, the disconnection detection function activates and the converted value is 32767.
Fixed at the lower
limit in this range.
Disconnection detected
below 1.2 mA.
1/30000 Resolution
A current of 4 to 20 mA is converted to a signed integer value (0 to 30000).
The input current range for which conversion is possible is 3.2 to 20.8 mA and here the converted
value is a signed integer value (-1500 to +31500).
If the input value falls below the input range such as for a disconnection, and the input current is less
than 1.2 mA, the disconnection detection function activates and the converted value is 32767.
Fixed at the lower
limit in this range.
Disconnection detected
below 1.2 mA.
NX-series Analog I/O Units User's Manual for Analog Input Units and Analog Output Units (W522)
Converted value
(decimal)
+8400
+8000
0
4 mA
400
−
3.2 mA
1.2 mA
Converted value
(decimal)
+31500
+30000
0
4 mA
1500
−
3.2 mA
1.2 mA
6 Analog Input Units
Fixed at the upper
limit in case of
20.8 mA or more.
Current
20 mA 20.8 mA
Fixed at the upper
limit in case of
20.8 mA or more.
Current
20 mA 20.8 mA
6
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