Allen-Bradley 1747-SN User Manual page 28

1–16 Overview
O O O
I I I
Slot 0 1 2 3 4 5 6
1 2 3
Slot Pair
Primary Chassis
Primary Chassis Configured As:
Logical Rack Number 0
Logical Group Number 0
Image Size (logical groups) 16
Addressing Mode 1/2-slot
Primary/Complementary Primary
Primary Chassis I/O Image
Input Image
from Primary Chassis
17 10
15 8
Slot 1
Slot 1
Slot 2
Slot 2
Slot 3
Slot 3
Slot 4
Slot 4
Slot 5
Slot 5
Slot 6
Slot 6
Slot 7
Slot 7
Slot 8
Slot 8
Scanner's I/O Image
Both images are overlapped in the
scanner. The overlapped image
appears where the primary chassis
image is configured to reside.
In this case, the primary chassis
image is configured as starting
logical rack 0 and starting logical
group 0.
Publication 1747 6.6 - July 1996
O
I
7 8
4
Output Image
from Primary Chassis
Octal
7 0 17 10 7
Decimal
7 0 15 8 7
Slot 1 Slot 1 Slot 1
Slot 1 Slot 1 Slot 1
1
Slot 2 Slot 2 Slot 2
Slot 2 Slot 2 Slot 2
Slot 3 Slot 3 Slot 3
Slot 3 Slot 3 Slot 3
2
Slot 4 Slot 4 Slot 4
Slot 4 Slot 4 Slot 4
Slot Pair
Slot 5 Slot 5 Slot 5
Slot 5 Slot 5 Slot 5
3
Slot 6 Slot 6 Slot 6
Slot 6 Slot 6 Slot 6
Slot 7 Slot 7 Slot 7
Slot 7 Slot 7 Slot 7
4
Slot 8 Slot 8 Slot 8
Slot 8 Slot 8 Slot 8
Input Image
17
15
Group 0 Slot 1
Group 1 Slot 1
Group 2 Slot 2
Logical
Group 3 Slot 2
Rack 0
Group 4 Slot 3
Group 5 Slot 3
Group 6 Slot 4
Group 7 Slot 4
Slot 5
Group 0
Slot 5
Group 1
Slot 6
Group 2
Logical Slot 6
Group 3
Slot 7
Group 4
Rack 1
Slot 7
Group 5
Slot 8
Group 6
Slot 8
Group 7
I = Input Module
O = Output Module
Complementary Chassis I/O Image
Input Image
from Complementary Chassis
Octal
0 17
Decimal
0 15
Slot 1
Slot 1
1
Slot 2
Slot 2
Slot 3
Slot 3
2
Slot 4
Slot 4
Slot Pair
Slot 5
Slot 5
3
Slot 6
Slot 6
Slot 7
Slot 7
4
Slot 8
Slot 8
= unused image space
Output Image
Octal
10 7 0 17 10 7
Decimal
8 7 0 15 8 7
Slot 1 Slot 1 Slot 1
Slot 1 Slot 1 Slot 1
1
Slot 2 Slot 2 Slot 2
Slot 2 Slot 2 Slot 2
Slot 3 Slot 3 Slot 3
Slot 3 Slot 3 Slot 3
2
Slot 4 Slot 4 Slot 4
Slot 4 Slot 4 Slot 4
Slot Pair
Slot 5 Slot 5 Slot 5
Slot 5 Slot 5 Slot 5
3
Slot 6 Slot 6 Slot 6
Slot 6 Slot 6 Slot 6
Slot 7 Slot 7 Slot 7
Slot 7 Slot 7 Slot 7
4
Slot 8 Slot 8 Slot 8
Slot 8 Slot 8 Slot 8
O O
I I
Slot 0 1 2 3 4
1 2
Slot Pair
Complementary Chassis
Complementary Chassis Configured As:
Logical Rack Number
Logical Group Number
Image Size (logical groups)
Addressing Mode
Primary/Complementary
Output Image
from Complementary Chassis
Octal
10 7 0 17
Decimal
8 7 0 15
Slot 1 Slot 1
Slot 1 Slot 1
1
Slot 2 Slot 2
Slot 2 Slot 2
Slot 3 Slot 3
Slot 3 Slot 3
2
Slot 4 Slot 4
Slot 4 Slot 4
Slot Pair
Slot 5 Slot 5
Slot 5 Slot 5
3
Slot 6 Slot 6
Slot 6 Slot 6
Slot 7 Slot 7
Slot 7 Slot 7
4
Slot 8 Slot 8
Slot 8 Slot 8
Octal
0
Decimal
0
1
2
Slot Pair
3
4
O O
I I
5 6 7 8
3 4
8 (decimal)
0
16
1/2-slot
Complementary
Octal
10 7 0
Decimal
8 7 0
Slot 1
Slot 1
1
Slot 2
Slot 2
Slot 3
Slot 3
2
Slot 4
Slot 4
Slot Pair
Slot 5
Slot 5
3
Slot 6
Slot 6
Slot 7
Slot 7
4
Slot 8
Slot 8