Understanding Slot Addressing - Allen-Bradley 1747-SN User Manual

Understanding Slot
Addressing
2 Slot
Addressing
Remote Chassis
1 Slot
Addressing
Remote Chassis
1/2 Slot
Addressing
Remote Chassis
This section provides information about:
2-slot addressing
1-slot addressing
1/2-slot addressing
Understanding slot addressing is critical to most efficiently allocate
your scanner's I/O image files.
Slot addressing refers to how each remote chassis slot is assigned a
specific amount of the I/O image. The amount depends on which
type of slot addressing you choose at your adapter; 2-slot, 1-slot, and
1/2-slot addressing is available, as shown below:
Two slots are addressed as one logical group.
Input Image
15 8 7
Slot 2
Input Image
15 8 7
Slot 1
Input Image
15 8 7
For more information on slot addressing, refer to your ASB module
user manual.
Note that slot addressing (e.g., 1/2-, 1-, and 2-slot) may not apply to
all types of RIO devices. Refer to each RIO device's user manual to
determine the type of slot addressing required.
Scanner Configuration and Programming
0 15
Slot 1
One slot is addressed as one logical group.
0 15
One slot is addressed as two logical groups.
0 15
Slot 1
Output Image
8 7
Slot 2 Slot 1
Output Image
8 7
Slot 1
Output Image
8 7
Publication 1747 6.6 - July 1996
4–31
0
0
0
Slot 1