14
FLEX I/O AC Digital Input Modules
Publication 1794-IN102C-EN-P - July 2015
Configuring Your AC Input Module
Setting the Input Filter Time
You can increase the input filter time (FT) for channels 00-07 (1794-IA8 and 1794-IA8I)
and channels 00-15 (1794-IA16) by setting the corresponding bits in the output image
table (complementary word) for the module.
Image Table Memory Map for the 1794-IA8 and 1794-IA8I Modules
Dec
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Oct
17
16
15
14
13
12
11
10
7
6
5
4
3
2
1
0
Read
I7
I6
I5
I4
I3
I2
I1
I0
Write
Not used – set to 0
Filter Time FT 0...7
Where
I = Input
FT = Input filter time
Image Table Memory Map for the 1794-IA16 Module
Dec
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Oct
17
16
15
14
13
12
11
10
7
6
5
4
3
2
1
0
Read 1
I15
I14
I13
I12
I11
I10
I9
I8
I7
I6
I5
I4
I3
I2
I1
I0
Write 3
Not used – set to 0
Input Filter FT
12...15
Input Filter FT
0...11
Where
I = Input
FT = Input filter time
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
FT = 12-15
FT = 0-11
1794-IA8, 1794-IA8I
1794-IA16
O:010
Dec.
