Rockwell Automation 1797-IBN16 FLEX Ex NAMUR Input Module - Manual (Page 11)

FLEX Ex NAMUR Input Module 11
Publication 1797-5.7 - March 2010
Input/Output Mapping
Set Input Filter Times
You can select the input filter time constant for each group of channels
(channels 00 to 11 or channels 12 to 15).
For example, to set a filter time constant of 5 ms for a dc input module, set
bits 05, 04, 03, 02, 01, and 00 as shown below.
Dec. Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Oct. Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
Read 0 I15 I14 I13 I12 I11 I10 I9 I8 I7 I6 I5 I4 I3 I2 I1 I0
Read 1 F15 F14 F13 F12 F11 F10 F9 F8 F7 F6 F5 F4 F3 F2 F1 F0
Read 1 Input 15 Counter
Write 0 CF CR FC Input Filter - Ch
12…15 Input/Alarm
Filter - Ch
0…11
Where:I = Input
F = Fault Alarm for an individual channel
CF = Counter Fast - Filter time constant or bypass, depending on setting (when input 15 is in counter mode) -
0 = normal, 1 = fast
CR = Counter Reset- Resets the counter value in read word 1 when input 15 is in counter mode.
0 = normal, 1 = reset
FC = Fault mode or Counter mode - determines content of read word 1 (counter value of input 15, or
fault data of individual channel). 0 = counter, 1 = fault data - wire off or short
circuit detect
40154
FT = 12 to 15
(14 to 17)
Dec.
(Octal)
O:010
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
1 0 0 1 0 0
FT = 00 to 11
(00 to 13)
=44 Octal
or 36 Decimal