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Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual User Manual

Page 28

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2–8

How Communication Takes Place and I/O Image Table Mapping

Publication 1794ĆUM057B-EN-P - November 2001

16Ćpoint Source Input Module Image Table Mapping - 1794ĆIV16

Module Image

Inputs

Delay

Time

Not used

Not used

Input Size

Output Size

0 or 1 Word

1 or 2 Words

I/O Image

Not used

Read

Write

Memory Map of 16-Point Input Module Image Table –
1794-IV16

Dec. Bits

15

14

13

12

11

10

09

08

07

06

05

04

03

02

01

00

Size

Oct. Bits

17

16

15

14

13

12

11

10

07

06

05

04

03

02

01

00 Read/Write Words

D15 D14 D13 D12 D11 D10 D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

Read word 1

Not used

FT for all channels

Not used

Writeword 1

Not used

Writeword 2

Where D = Input Data

FT = Input filter Time

Input Filter Times for the 1794-IV16 Input Module

Bits

Description

Selected

10

09

08 Filter Time for Inputs 00-15 (00-17)

Filter Time

0

0

0

Filter Time 0 (default)

216

µ

s

0

0

1

Filter Time 1

512

µ

s

0

1

0

Filter Time 2

1ms

0

1

1

Filter Time 3

2ms

1

0

0

Filter Time 4

4ms

1

0

1

Filter Time 5

8ms

1

1

0

Filter Time 6

16ms

1

1

1

Filter Time 7

32ms