Omron DRT2 Series Operation Manual page 181

Analog Input Terminals
Off-wire Detection
User Adjustment
164
5. To set the OFF delay function, input the desired value in the Comparator
Off Delay field.
6. Return to the General Tab, click the Download Button, and then click the
Reset Button to reset the Unit.
7. Click the OK Button and exit the window.
When a disconnection occurs in an analog input line (voltage input or current
input), the Off-wire Detection Flag turns ON for each input that is enabled in
the number of AD conversion points. The Off-wire Detection Flags are
included in the Analog Status Flags.
When Off-wire Detection is enabled, the value of AD conversion data is set to
7FFF hex. When the input returns to a value within the range that can be con-
verted, the Off-wire Detection function will automatically be turned OFF, and
normal data conversion will occur.
Off-wire Detection functions with input ranges of 1 to 5 V or 4 to 20 mA only.
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%
After adjustment
Before adjustment
100% Voltage/current
Section 7-3