Input Filter - Omron DRT2 Series Operation Manual

Remote I/O Terminal and Environment-resistive Terminal Functions
Checking Using the
DeviceNet
Configurator
1,2,3...
4-3-2

Input Filter

Function Overview
ON Response Time
The method used to check information from the DeviceNet Configurator (Ver.
2.20 or later) is described here.
1. Turn ON the power to the DRT2-series Smart Slave.
2. From the Maintenance Mode Window, double-click the icon of the applica-
ble DRT2-series Smart Slave in the Network Configuration Window to dis-
play the Maintenance Information Window. The I/O power is not being
supplied if the Input Power Supply Error or Output Power Supply Error
items are selected.
Input values can be read several times during a set interval so that the input
value is enabled only when the value of all samples are the same. The input
filter is applied to all of the inputs of the Unit.
When input data changes to ON, the input data is read four times for the
period of the set interval (1/4 of the ON response time). If all values are ON,
the input is turned ON. The ON timing is delayed according to the length of
the ON response time.
The input filter can also be used to perform an ON delay operation (a delay for
the ON response time is created when the input filter is enabled).
1 2 3 4
ON
OFF
Not all values are
ON during the four
ON OFF OFF ON
samples, so the
Input data
input is regarded as
being OFF.
ON
OFF
1 2
3 4
ON
OFF
All values are ON
during the four
ON ON ON
ON
samples, so the input is
regarded as being ON.
Input data
ON
OFF
ON delay time
(= input filter time)
Section 4-3
49