Rockwell-automation 1794-OB16D FLEX I/O Diagnostic Modules User Manual Manual de usuario descargar pdf (Pagina 28)

Publication 1794-UM061A-EN-P - July 2006

26 About the FLEX I/O Diagnostic Input Module

Configure Your Diagnostic

Input Module

The configuration and input filter selection table are shown below.

Data Table & Input Filter Time Selection

The inputs are read in Word 1. Bit 00 is the first input and decimal bit 15 is the

last input.

Diagnostic status is read from Word 2:

Bit 00: Module Error Bit

Bit 01: External Power Reverse Polarity Error Bit

Bit 02: Sensor Power Short Error Bit

Bit 03: Sensor Power Open Wire Error Bit

Input Filter Times

Input filter times are configurable on a module basis. Both off-to-on and

on-to-off times are set by write Word 3. The default filter time is 0.25 ms.

Dec. 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Oct. 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Read 1 I 15 I 14 I 13 I 12 I 11 I 10 I 9 I 8 I 7 I 6 I 5 I 4 I 3 I 2 I 1 I 0

Read 2 Not used Read Diagnostics Status

Write 1 Not used Input Filter FT 0-15 Not used

Where: I = Input

FT = Input filter time

Diagnostic status;

Bit 00 = module error;

Bit 01 = external power reverse polarity error;

Bit 02 = sensor power short error;

Bit 03 = sensor power open wire error

Bits Description Filter Time

10 09 08 Filter time for inputs 0

thru 15

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 0 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 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 131 132

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Rockwell-automation 1794-OB16D FLEX I/O Diagnostic Modules User Manual Manual de usuario Pagina 28