Module placement with 1ćslot addressing, You can use 8-point or 16-point i/o modules – Rockwell Automation 1771-ASB/E Remote I/O Adapter User Manual User Manual
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Addressing Modes for Your Remote I/O
Publication 1771-UM001A-US-P - February 2000
Module Placement with 1Ćslot Addressing
Figure 3.14 shows possible module placement for complementary
I/O with 1-slot addressing.
Figure 3.14
ComplementaryI/O Configurations with 1Ćslot Addressing
I
I
O
I
O
O
O
D ouble-slot
BT
E
M
P
T
Y
0
2
1
3
4
5
6
7
E x a m p le A
E x a m p le B
P rim a ry 1 6 -s lo t
C h a s s is
I/O G ro u p
N u m b e r
C o m p le m e n ta ry
1 6 -s lo t C h a s s is
P rim a ry 1 6 -s lo t
C h a s s is
I/O G ro u p
N u m b e r
C o m p le m e n ta ry
1 6 -s lo t C h a s s is
I = Input M odule (8- or 16-point)
O = O utput M odule (8- or 16-point)
BT = Block transfer M odule
1 O utput m odules use the sam e output im age table bits
2 Can be input or output m odule (8- or 16-point) single-slot block tran fer m odule
3 M ust be em pty if corresponding prim ary slot is block transfer m odule
1
2
BT
O
I
I
I
O
O
E
M
P
T
Y
O
O
I
I
O
O
I
I, O ,
BT
I
I
I
O
O
O
0
1
2
3
4
5
6
7
0
2
1
3
4
5
6
7
0
1
2
3
4
5
6
7
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
I
O
13080
1
3
3
s
Follow these guidelines when you select 1-slot addressing:
•
Place input modules opposite output modules; place output
modules opposite input modules.
•
You can use 8-point or 16-point I/O modules.
•
Output modules placed opposite output modules reflect the
same bits in the output image table.
You can use block-transfer modules in a complementary I/O
configuration with 1-slot addressing. Remember that when you
select 1-slot addressing, an I/O group is one module slot. Use
block-transfer modules with these restrictions: