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<4. Module Access >
4-19
IM 34M6H54-01E
●
Input filter constant
Input filter constants are set in bits 0 to 3 of data position number 33 using the ladder
program. The initial value is set so that the minimum pulse width that can be counted is
32.8 ms (a preset value of 13).
Bit number
TC040206_10.EPS
Data position
number
17
15
0
14
0
13
0
12
0
11
0
10
0
9
0
8
0
7
0
6
0
5
0
4
0
3
1
2
1
1
0
0
1
Bit number
TC040206_11.EPS
Preset value
0 ($0000)
1 ($0001)
2 ($0002)
3 ($0003)
4 ($0004)
5 ($0005)
6 ($0006)
7 ($0007)
8 ($0008)
9 ($0009)
10 ($000A)
11 ($000B)
12 ($000C)
13 ($000D)
14 ($000E)
15 ($000F)
10
µ
s
13
µ
s
21
µ
s
37
µ
s
69
µ
s
130
µ
s
260
µ
s
520
µ
s
1.1 ms
2.1 ms
4.1 ms
8.2 ms
16.4 ms
32.8 ms
65.6 ms
132 ms
—
—
3
µ
s
11
µ
s
27
µ
s
59
µ
s
120
µ
s
250
µ
s
510
µ
s
1 ms
2 ms
4 ms
8.1 ms
16.3 ms
32.7 ms
65.5 ms
3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Minimum pulse width
that is countable
Maximum pulse width
which is not counted
CAUTION
When an input filter is set, it restricts the pulse width of input pulses that can pass through.
4.2.7
Reading Input Relays
The input relays used in the pulse input module is shown in Table 4.8.
These relays are either latched type or state type. Latched type relays turn on when the set
conditions are satisfied; they stay on until the output relay that is used to turn off the input
relay changes from off to on. State type relays are on while the conditions are satisfied and
off when the conditions are not satisfied.
1st Edition : Feb.01,1999-00
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