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S5-95F
4.2
Using the Onboard I/Os
The S5-95F offers you the following I/Os on the two basic units:
•
16 failsafe digital inputs (DI 32.0 to 33.7)
•
8 failsafe digital outputs (DQ 32.0 to 32.7)
•
8 non-failsafe digital outputs (DQ 33.0 to 33.3 in subunit A and DQ 32.0 to 34.3 in
subunit B)
•
4 failsafe interrupt inputs (DI 59.0 to DI 59.3)
•
2 failsafe counter inputs (IW 36 for counter A, IW 38 for counter B)
The addresses of the inputs and outputs are permanently assigned and cannot be modified.
Prior to using the onboard I/Os, you must
Wire the corresponding input and output
Assign the input and output parameters using COM 95F
Assign certain signal groups to the inputs and outputs.
A summary of the assignment of the I/O connectors is given in section 4.7.
Signal Groups
A signal group is a combination of I/Os for which a uniform system reaction is defined.
The reaction to a fault within a signal group is set using COM 95F (see COM 95F manual).
The assignment of the signal groups applies not only to the onboard I/Os, but also to the failsafe
external I/Os.
Parameterizable Reaction for
Signal Group
STOP
Passivation
User reaction
AND
OR
OLD
EWA 4NEB 812 6210-02
Table 4-2. Reactions of Signal Groups
As soon as the S5-95F recognizes an I/O fault, it
switches the whole system to STOP
As soon as the S5-95F recognizes an I/O fault, it
passivates all I/Os of the signal group affected:
Inputs are read with "0" signal
Outputs are reset
If an I/O fault occurs, the S5-95F signals this fault, and
reads the faulty input in the case of
AND
with "0" signal
OR
with "1" signal
OLD
with the last value valid (old value)
Installing and Connecting the Basic System
Remarks
4-7
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