Allen-Bradley 1747-ASB User Manual

Publication 1747-UM006B-EN-P - June 2003
3-12 Addressing
1/2-Slot Addressing Examples
The following example illustrates how to map modules requiring:
• two words of input or output image
• more than two words of input or output image
0 12 3 456781746 Slot Numbering
Slot Pair
1234
O
I = Input Module
= Output Module
In the example below, the modules require two words of input
or output image.
If you would like to know how you can use the unused input or output
images, refer to the complementary I/O description, found on page 4–5.
In this example, the modules require more than two words of input
or output image.
Input modules must be paired with output modules so their input or output
images do not overlap.
Modules Requiring Two Words Modules Requiring More Than Two Words
Slot 1
Slot 3
Slot 5
Slot 7
Slot 1
Slot 3
Slot 5
Slot 7
Slot 1
Slot 3
Slot 5
Slot 7
Slot 1
Slot 3
Slot 5
Slot 7
Slot 2
Slot 4
Slot 6
Slot 8
Slot 2
Slot 4
Slot 6
Slot 8
Slot 2
Slot 4
Slot 6
Slot 8
Slot 2
Slot 4
Slot 6
Slot 8
= unused
Slot Pair
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6
Slot 8
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6
Slot 8
1
2
3
4
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6
Slot 7
Slot 8
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6
Slot 7
Slot 8
Slot 7
Slot 7
Slot 1Slot 1
Slot 1 Slot 1
Slot 3Slot 3
Slot 3 Slot 3
Slot 5Slot 5
Slot 5 Slot 5
Slot 7Slot 7
Slot 7 Slot 7
1
2
3
4
1
2
3
4
Slot 8Slot 8
Slot 8 Slot 8
Slot 6Slot 6
Slot 6 Slot 6
Slot 4Slot 4
Slot 4 Slot 4
Slot 2Slot 2
Slot 2 Slot 2
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6
Slot 7
Slot 8
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6
Slot 7
Slot 8
1
2
3
4
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6
Slot 7
Slot 8
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6
Slot 7
Slot 8
1747-ASB Input Image 1747-ASB Output Image
07815 07815
1747-ASB Input Image 1747-ASB Output Image
07815 07815
II II
OOOO
701017
Decimal
Octal
701017
Decimal
Octal
701017
Decimal
Octal
701017
Decimal
Octal
Slot Pair Slot Pair Slot Pair
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Allen-Bradley 1747-ASB Specifications

General

Brand	Allen-Bradley
Model	1747-ASB
Category	Control Unit
Language	English