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S5-95F
If the S5-95F consists of several tiers, numbering of the expansion tiers is continued with the slot on
the extreme left.
Slot number in subunit A
16
18
20
S5-95F
0
2
4
basic unit
Figure 18-6. Slot Numbering in a Multi-Tier Configuration
When expanding your system, always add the new bus units to the topmost tier on the right.
Otherwise, the slot numbers on the right of the new bus units will be changed, which requires
address changes in your control program.
Note
After every expansion, check to make certain that the addressing used in the control
program is the same as that in the actual configuration.
EWA 4NEB 812 6210-02
22
24 26
28
30
6
8
10
12
14
Rules for Failsafe Operation of an S5-95F
Slot number in subunit B
17
19
21
23
S5-95F
1
3
5
7
basic unit
25 27
29
31
9 11 13
15
18-31
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