The glitch filter filters out misstate binary signals. For each input a time can be parameterized, how long the signal state must be constant before the signal will pass the filter and can be evaluated.

 

Example:

If the glitch filter time is parameterized to value 2, the signal state of this input must be constant at least 2 ms, before the signal will pass the filter and can be evaluated. If the input signal changes the state e.g. for 1 ms this signal change will not pass the glitch filter.

 

 

The glitch filter effects next behind the binary input for both directions. Positive and negative edge is not differentiated. For inputs parameterized as measuring inputs (probe function) the glitch filters have no function, no diagnosis message is generated.

 

Configuration 0x22DB 'List glitch filter time'

List element	Content	Meaning
1	Adjustable glitch filter time for each binary input: range of values: 1-100 [ms]	BI 1 Port 3, binary input device 1)
2		BI 1 Port 3, binary input device 1)
3		BI 1 Port 3, binary input device 1)
4		BI 1 Port 3, binary input device 1)
5		BI 1 Port 3, binary input device 1)
6		Reserved
7		Reserved
8		Reserved
9		I1 port 1, binary input option 1)
10		I2 port 1, binary input option 1)
11		I3 port 1, binary input option 1)
12		I4 port 1, binary input option 1)
13		I5 port 1, binary input option 1)
14		I6 port 1, binary input option 1)
15		I7 port 1, binary input option 1)
16		I8 port 1, binary input option 1)
17		I9 port 1, binary input option 1)
18		I10 port 1, binary input option 1)
19		I11 port 1, binary input option 1)
20		I12 port 1, binary input option 1)
21		Reserved
22		Reserved
...		Reserved
n		Reserved

1)	The availability depends on the device type