Example Scanner I/O Image - Allen-Bradley 1747-SN User Manual

1–8 Overview
Full Logical Rack
Device
Begins at Logical
Rack 0, Group 0.
Important: The illustration below shows only the scanner's input image. The output image looks the same.
Bit Number
Rack 0 Group 0
Rack 0 Group 1
Rack 0 Group 2 Word 2
RIO
Rack 0 Group 3
Logical Rack 0 Group 4
Rack 0 Group 5
Rack 0
Word 6
Rack 0 Group 6
Rack 0 Group 7
Rack 1 Group 0
Rack 1 Group 1
RIO
Rack 1 Group 2 Word 10
Rack 1 Group 3
Logical Word 11
Rack 1 Group 4 Word 12
Rack 1
Rack 1 Group 5 Word 13
Rack 1 Group 6 Word 14
Rack 1 Group 7 Word 15
Rack 2 Group 0 Word 16
Rack 2 Group 1 Word 17
RIO
Rack 2 Group 2
Word 18
Logical
Rack 2 Group 3 Word 19
Rack 2 Group 4 Word 20
Rack 2
Word 21
Rack 2 Group 5
Word 22
Rack 2 Group 6
Rack 2 Group 7 Word 23
Rack 3 Group 0 Word 24
Rack 3 Group 1 Word 25
RIO
Rack 3 Group 2
Word 26
Logical
Rack 3 Group 3 Word 27
Rack 3 Group 4 Word 28
Rack 3
Rack 3 Group 5 Word 29
Rack 3 Group 6 Word 30
Rack 3 Group 7 Word 31
Bit Number (octal)
Publication 1747 6.6 - July 1996

Example Scanner I/O Image

The illustrations below show a scanner's input image of 4 RIO link
devices.
SLC 5/02
or Later
Processor
RIO
Scanner
Device 1
Three Quarter Logical
Rack Device
Begins at Logical
Rack 1, Group 0.
15 14 13 12 11
Word 0
Word 1
Word 3
Word 4
Word 5
Word 7
Word 8
Word 9
17 16 15 14 13
8 8 8 8
e = slot number of the SLC chassis containing the scanner
Device 2
Device 3
Half Logical Rack
Device
Begins at Logical
Rack 2, Group 0.
10 9 8 7 6 5
12 11 10 7 6 5
8 8 8 8 8 8 8
Device 4
Quarter Logical Rack
Device
Begins at Logical
Rack 2, Group 4.
Input File
Address
4 3 2 1 0
I:e.0
I:e.1
I:e.2
I:e.3
I:e.4
I:e.5
I:e.6
I:e.7
I:e.8
I:e.9
I:e.10
I:e.11
I:e.12
I:e.13
I:e.14
I:e.15
I:e.16
I:e.17
I:e.18
I:e.19
I:e.20
I:e.21
I:e.22
I:e.23
I:e.24
I:e.25
I:e.26
I:e.27
I:e.28
I:e.29
I:e.30
I:e.31
4 3 2 1 0
8 8 8 8 8
Device 1
Device 2
Not Used
Device 3
Device 4
Not Used