Rules for Failsafe Operation of an S5-95F S5-95F
18.14.1 Address Assignments for Onboard I/Os
The addresses of the onboard I/Os are permanently assigned and cannot be changed by you. The
assignment is shown in the following table:
Onboard I/Os
Byte/Word
Address
Bit Address
Digital inputs, failsafe
Digital outputs, failsafe
Digital outputs, non-failsafe
Counter A, failsafe
Counter B, failsafe
Interrupt inputs, failsafe
IB 32 to 33
QB 32
QB 33 to 34
IW 36
IW 38
IB 59
I 32.0 to I 33.7
Q 32.0 to Q 32.7
Q33.0 to Q 33.3 (subunit A)
Q 34.0 to Q 34.3 (subunit B)
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I 59.0 to I 59.3
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18.14.2 Slot Numbering and Address Assignment for External I/Os
With 8 bus units (16 slots), each subunit can have a maximum of four tiers.
The slots are assigned ascending numbers. Numbering begins with the slot next to the basic unit.
Whether a module is plugged in or not has no effect on the numbering.
Note
The slots for subunit A are even-numbered and the slots for subunit B are odd-
numbered.
Figure 18-5. Consecutive Numbering of Slots in a Single-Tier
Configuration
S5-95F
basic unit
28 3020 4 6
Slot numbers in subunit A
S5-95F
basic unit
29 313 5 7
Slot numbers in subunit B
1
18-30
EWA 4NEB 812 6210-02
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