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Analog Input Terminals Section 7-4
Off-wire Detection functions with input ranges of 1 to 5 V or 4 to 20 mA only.
With the 1 to 5 V input range, an off-wire condition is detected when the input
voltage is below 0.76 V (less than 6%). With the 4 to 20 mA input range, an
off-wire condition is detected when the input current is below 3.04 mA.
User Adjustment Depending on factors such as the characteristics and connection methods of
the input device, the input can be adjusted to compensate for error in the input
voltage or current. The following diagram shows when compensation is
applied to the conversion line at the two points for 0% and 100%.
The following table shows the input ranges that support user adjustment.
Setting Using the DeviceNet Configurator
1,2,3... 1. Double-click the icon of the Analog Slave to be set in the Main Window and
open the Edit Device Parameters Window. (From the Maintenance Mode
Window, click the right mouse button over the Slave icon and select Pa-
rameters and Edit.)
Input range Low Limit High Limit
0 to 5 V –0.25 to 0.25 V 4.75 to 5.25 V
1 to 5 V 0.8 to 1.2 V 4.8 to 5.2 V
0 to 10 V –0.5 to 0.5 V 9.5 to 10.5 V
–10 to 10 V –11 to –9.0 V 9.0 to 11 V
4 to 20 mA 3.2 to 4.8 mA 19.2 to 20.8 mA
0 to 20 mA –1.0 to 1.0 mA 19 to 21 mA
100%
0%
Conversion data
After adjustment
Before adjustment
Voltage/current
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