Rockwell Automation 1747-ASB Remote I/O Adapter User Manual
Page 39
Publication 1747-UM006B-EN-P - June 2003
Addressing 3-3
Slot addressing refers to how each chassis slot is assigned a specific
amount of the 1747-ASB module image. The amount depends on
which type of slot addressing you choose; 2-slot, 1-slot, and 1/2-slot
addressing is available, as shown below:
IMPORTANT
Due to SLC and PLC addressing differences, when
the 1747-ASB module is used with an SLC processor,
the image bit numbers are 0 to 7, 8 to 15 decimal.
When the 1747-ASB module is used with a PLC
processor, the image bit numbers are 0 to 7, 10 to 17
octal.
2-Slot
Addressing
Two slots are addressed as one logical group.
1-Slot
Addressing
One slot is addressed as one logical group.
1/2-Slot
Addressing
One slot is addressed as two logical groups.
Slot 1
Slot 1
Slot 1
Slot 2
Slot 1
Slot 1
Slot 1
Slot 2
Input Image
Input Image
Input Image
Output Image
Output Image
Output Image
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