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S5-100U
Example:
Expanding from 14 to 18 slots
Existing configuration
8
9
10
11
12 13
0
1
2 3 4 5 6
CPU
8
9
10
11
12 13
0
1
2 3 4 5 6
CPU
8
9
10
11
12 13
8
0
1
2
CPU
EWA 4NEB 812 6120-02
7
Correct expansion procedure
14
15
16 17
7
Incorrect expansion procedure
14
15
16 17
9
10
11
12 13
3 4 5 6
7
Figure 6-4. Expanding from 14 to 18 Slots
New bus units
The new bus units are added at
the right. The interface module
is moved correspondingly to the
right. The old slot numbers are
retained. Continue numbering
the new slots sequentially.
The slot numbers of the old bus
units move to numbers 12 to 17.
The new slots are given the num-
bers 8 to 11.
Addressing
6-3
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