
Planning Your Application
Chapter 4
4-36
Figure 4.16
Discrete
I/O Usage W
orksheet for the Sample Application
Discrete
I/O Usage W
orksheet
Application File Name: Rack Number:
PLC Output Bit Numbers
17 16 15 14 13 12 11
10
7654321
0
1
2
3
4
5
6
7
PLC Input Bit Numbers
0
17 16 15 14 13 12 11 10
7654321
0
1
2
3
4
5
6
7
0
Sample Application 1
************ ***
**
bbb bbb b b
x xxx xxx xxx
x
xx xxx
xx
xx xx
xx xx
xx xx
xx xx
xx xxxxxxxx
xx
xx xx
xx xx
xx xx
xx xxx x
x
xx xx
xx xx
xx xx
xx
xx
xx
xx
x
x
x
x
x
x
xx
x
x
***********
b
x
****
**
bbbbbbb
xxx xxxx
x
x xxxxxx
The Words from 2 to 7 are empty as illustrated in Word 2
x
x
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