Scanner image division configuration example, Logical rack 0, Logical rack 1 logical rack 2 – Rockwell Automation 1747-DCM,D17476.8 Direct Communication Module User Manual
Page 19: Chapter 1 overview, Device 1 device 2 device 3, Device 5, Device 4
Chapter 1
Overview
1–5
Scanner Image Division Configuration Example
The example presented here can help you configure your RIO architecture.
Refer to it as necessary.
The following figure shows how a portion of a scanner’s input image table
might be configured. An output image table would be identically configured.
Rack 1 Group 2
Rack 1 Group 3
Rack 1 Group 0
Rack 1 Group 1
Rack 1 Group 6
Rack 1 Group 4
Rack 1 Group 5
Rack 0 Group 6
Rack 0 Group 7
Rack 0 Group 4
Rack 0 Group 5
Rack 0 Group 2
Rack 0 Group 3
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Decimal Bit Number
Word 0
Word 1
Word 2
Word 3
Word 4
Word 7
Word 8
Word 9
Word 10
Word 11
Word 12
Word 13
Word 14
Word 5
Word 6
Rack 0 Group 0
Rack 0 Group 1
Rack 2 Group 7
Rack 2 Group 5
Rack 2 Group 6
Rack 2 Group 3
Rack 2 Group 4
Rack 2 Group 1
Rack 2 Group 2
Word 15
Word 16
Word 17
Word 18
Word 19
Word 22
Word 23
Word 20
Word 21
Rack 1 Group 7
Rack 2 Group 0
Logical
Rack 0
Device 1
Device 2
Device 3
Logical
Rack 1
Logical
Rack 2
(Full logical rack)
(3/4 logical rack)
(1/2 logical rack)
Device 5
(1/2 logical rack)
Device 4
(1/4 logical rack)
0
1
2
3
4
5
6
7
10
11
12
13
14
15
16
17
Octal Bit Number
Important: The configured image size of a DCM cannot cross logical rack
boundaries; it cannot use a portion of rack 0 and a portion of
rack 1.