Omron DRT2 SERIES DEVICENET SLAVES - OPERATION MANUAL 04-2008 Operation Manual page 373

Analog Input Terminals
User Adjustment
Setting Using the DeviceNet Configurator
1,2,3...
352
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.
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%.
Conversion data
0%
The following table shows the input ranges that support user adjustment.
Input range
0 to 5 V –0.25 to 0.25 V
1 to 5 V 0.8 to 1.2 V
0 to 10 V –0.5 to 0.5 V
–10 to 10 V –11 to –9.0 V
4 to 20 mA 3.2 to 4.8 mA
0 to 20 mA –1.0 to 1.0 mA
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.)
After adjustment
Before adjustment
100% Voltage/current
Low Limit
4.75 to 5.25 V
4.8 to 5.2 V
9.5 to 10.5 V
9.0 to 11 V
19.2 to 20.8 mA
19 to 21 mA
Section 7-4
High Limit