Allen-Bradley 1794-IB8 - Page 16

16 FLEX I/O Digital Input Modules
Publication 1794-IN093E-EN-P - August 2018
For example, to increase the off-to-on filter time to 4 ms for all inputs at address rack 1,
module group 0, (using 1794-IB32 as an example), set bits and program as shown below.
Refer to the Input Filter Time table for other bit settings.
Input Filter Time
Bits Description Filter Time
02 01 00 Filter Time for inputs 0...7 (1794-IB8) 1794-IB8, 1794-IB16,
1794-IB32
02 01 00 Filter Time for inputs 0...11 (1794-IB16)
05 04 03 Filter Time for inputs 12...15 (1794-IB16)
10 09 08 Filter Time for inputs 0...32 (1794-IB32) Off to On/On to Off
0 0 0 Filter Time 0 (Default) 0.25 ms
0 0 1 Filter Time 1 0.5 ms
0 1 0 Filter Time 2 1 ms
0 1 1 Filter Time 3 2 ms
1 0 1 Filter Time 4 4 ms
1 0 1 Filter Time 5 8 ms
1 1 0 Filter Time 6 16 ms
1 1 1 Filter Time 7 32 ms
1
00
76543
FLL
I:000
00
Fill File
Source
Destination
Length
#O:010
1
Write FT to complement
of input module.
Write filter time on system startup.
765432 1 0
0
1
0
= 4 Octal or 4 Decimal
21 0
= 44 Octal or 36 Decimal
010100
1794-IB8
1794-IB16
1
00
= 4 Octal or 4 Decimal
10 0
1794-IB32
09 08101112131415