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Analog Input Units Section 5-4
Setting Hysteresis The Comparator Result Flag turns OFF when the value is lower than the hys-
teresis width (H or HH alarm occurs) or exceeds it (L or LL alarm occurs), as
shown in the following diagram. If the analog value fluctuates around the
threshold, and the flag repeatedly turns ON or OFF, setting hysteresis will sta-
bilize the flag operation.
OFF Delay The time until the Comparator Result Flag turns OFF can be extended. For
example, even if the Flag is ON momentarily, the OFF delay can be set so
that the Master can receive notification of the Flag’s status.
Setting Procedure (Example: DeviceNet Configurator)
1,2,3... 1. In the Network Configuration Window for the Slice I/O Terminal, double-
click the icon of the Slice I/O Terminal that is to be set. Alternatively, right-
click the icon and select Parameters - Edit. The Edit Device Parameters
Window will be displayed.
2. Click the I/O Module Tab.
3. Click the Edit Button on the I/O Module Tab Page. The Edit Unit Parame-
ters Window will be displayed.
HH set value or
H set value
Hysteresis width
LL set value or L
set value
Hysteresis
width
HH Alarm Flag or
H Alarm Flag
LL Alarm Flag or
L Alarm Flag
HH set value
Hysteresis width
OFF delay
HH Alarm Flag
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