1747-scnr memory layout – Rockwell Automation 1747-SCNR ControlNet Scanner Module Reference Manual User Manual

Page 60

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Publication 1747-RM623D-EN-P - June 2006

B-4 Use CIP Messaging to Access Local Database and ControlNet Data Files

1747-SCNR Memory Layout

See the figure for an example of 1747-SCNR memory layout.

MO:2

O:1

1747-SCNR memory layout

Input

image file

I:0

I:1

I:2

I:3

I:31

Output

image file

O:0

O:2

O:3

O:31

M1 file

M1:0

M1:1

M1:2

M1:3

M1:254

M1:4

M1:255

M0 file

MO:3

MO:254

MO:4

MO:255

MO:700

MO:701

MO:954

MO:955

one-based
word offsets

41540

MO:0

1

2

3

4

32

ControlNet
output data

1

2

3

4

32

ControlNet
input data

ControlNet
input data

ControlNet
output data

M1:600

M1:607

1

2

3

4

5

255

256

1

2

3

4

5

255

256

601

608

701

702

955

956

Local
Database

1001

1651

M0:1000

M0:1650

connection
status bit
array

CIP
messaging

MO:1

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