8. Special I/O Functions
8.2 Variable input filter constant
Function
The input filter constant (ON/OFF delay time) of the leading 8 points X000 to X007 can be specified by user program within the range of 0 to 15 ms. The default is 10 ms. The setting value is recognized at the first scan. Therefore, it cannot be changed after the second scan.
Related registers
SW16 Function selection. Refer to section 8.1.
SW17 Input filter constant value
F E D C B A 9 8 7 6 5 4 3 2 1 0
No use (set to 0)
Setting value
0 to 15
Operation
Input signal
T | T | T | T |
Internal logic |
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Scan cycle |
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X device |
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T: Input filter constant (0 to 15 ms)
Sample program
This program sets the input filter constant to 3 ms.
NOTE
For the AC input types, this function works as extended delay time.
On delay time = 25 ms + setting time
Off delay time = 30 ms + setting time
272 T1/T1S User’s Manual
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