Omron CRT1 - 10-2008, Operation Manual

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Word Slave Unit and Bit Slave Unit Functions Section 11-3
11-3-2 Input Filter (Input Units Only)
Description
An input value is read more than once during a set time interval. The input
value can be set to be enabled only when all the read values are the same.
This function operates for all input points in one Slave Unit.
Input Time Constant When the input data turns ON, the input data is read 4 times at a set time (1/4
of the time setting). The internal input data turns ON only when all four values
are ON. The ON timing is delayed by the value of the input time constant. The
same function is supported when the input data turns OFF.
OFF Response Time When the input data turns OFF, the input data is read 5 times at a set interval
(1/5 of the OFF response time setting). The internal input data turns OFF only
when all values are OFF. The OFF timing is delayed by the value of the OFF
response time.
This function can also be used to implement an OFF delay.
To enable reading pulses shorter than the communications cycle time, set the
OFF response time to a value longer than the communications cycle time.
(The input may remain ON if the input pulse interval is too short.)
Settings Using the CX-Integrator
1,2,3... 1. Turn ON the power supply to the CompoNet Slave Unit.
2. Double-click the icon of the Slave Unit to set in the Network Configuration
Window to open the Configuration Window. (Alternatively, right-click the
icon and select
Parameters - Edit from the pop-up menu.)
3. Click the IN Tab. Select the Input Time Constant and OFF Delay from the
pull-down lists.
OFF
ON
ON
OFF
ON ON OFF OFF
4 3 2 1
Input data
The internal input data
remains OFF because the
read input data was not ON
all 4 times.
ON ON
ON
ON
4 3 2 1
OFF
ON
ON
OFF
Input data
ON delay (= input filter time)
The internal input
data turns ON
because the read
input data was
ON all 4 times.
OFF
1
ON
5
OFF OFF ON
4 3 2
OFF
ON
ON
OFF
Input data
The internal input
data remains ON
because read input
data was not OFF
all 5 times.
OFF OFF OFF
OFF
4 3 2 1
OFF
5
OFF
ON
ON
OFF
Input data
The internal
input data turns
OFF because
the read input
data was OFF
all 5 times.
OFF-delay time