Allen-Bradley D Series - Page 33

Chapter 3
Addressing Modes for Your Remote I/O
3-5
Figure 3.4
8point
Input and Output Modules Using Eight Bits of the Input Image
T able W ord and Eight Bits of the Output Image T able W ord
Input
Terminals
00
01
02
03
04
05
06
07
Output
Terminals
10
11
12
13
14
15
16
17
17 161514 12
10
07
06
05 03
020100
04
11
13
Outputimagetablewordcorresponding
totheI/Ogroup.
unused
17 161514 12
10
07
06
05 03
0201
00
04
11
13
Inputimagetablewordcorresponding
totheI/Ogroup.
14965
Outputbitsused
Inputbitsused
Always0
2slot I/O Group
Using Highdensity (16 point) I/O Modules
16-point I/O modules provide 16 input terminals or 16 output terminals.
16-point I/O modules use a full word in the input or output image table
when they are addressed as a 2-slot I/O group (Figure 3.5). Two 16-point
modules (one input and one output) can be used in a 2-slot I/O group.
Allen-Bradley PLCs