Siemens SIMATIC ET 200S Installation And Operating Manual page 181

PROFIsafe Address
Every -> fail-safe module has a PROFIsafe address You must configure the PROFIsafe
address in STEP 7 HW Config and set it on the F-I/O using a switch.
PROFIsafe Monitoring Time
Monitoring time for safety-related communication between the F-CPU and F-I/O
Proof-Test Interval
A component must be set in the fail-safe state following the proof-test interval. That is, it is
replaced by an unused component or it is proven to be completely error-free.
P-Switch
-> See M-Switch.
Redundancy, availability-enhancing
Availability-enhancing redundancy means multiple availability of components to ensure that
components continue to function even in the event of hardware faults.
Redundancy, safety-enhancing
Multiple installations of components with the goal of reducing hardware faults; for example,
-> 1oo2 evaluation in -> fail-safe modules.
Reintegration
Once a fault has been eliminated, the -> F-I/O must be reintegrated (depassivated). The
reintegration (switchover from fail-safe values to process values) occurs either automatically
or only after user acknowledgement in the safety program.
For an F-I/O module with inputs, the process values pending at the fail-safe inputs are
provided again for the -> safety program after reintegration. For an F-I/O module with
outputs, the -> F-system again transfers the output values provided in the safety program to
the fail-safe outputs.
Requirement Classes
Safety requirement class (AK) in accordance with DIN V 19250 (DIN V VDE 0801):
Safety requirement classes are a means of categorizing safety requirements for preventing
and remedying faults. With -> fail-safe modules, safety requirement classes up to A6 can be
used in -> safety mode.
Response time
Response time starts with the detection of an input signal and ends with the modification of a
gated output signal.
ET 200S Distributed I/O System - Fail-Safe Modules
Hardware Installation and Operating Manual, 07/2005, A5E00103686-04
Glossary
Glossary-7