Siemens SIMATIC ET 200AL, System Manual

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Interrupts/diagnostic messages/diagnostics
6.1 Reactions to faults
Digital I/O module F-DI 4+F-DQ 2x24VDC/2A, 4xM12 (6ES7146-5FF00-0BA0)
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Equipment Manual, V1.0, 05/2021, A5E51082342-AA
Passivation is applied to individual channels when a channel-specific diagnostic failure is
detected. Failures that can affect the entire module result in passivation of all channels.
Note
In the F-DI 4/F-DQ 2 Properties > F-parameter s > "Behavior after channel fault" field, if you
select "Passivate the entire module", a single channel fault will result in passivation of all
channels.
Timeout of the PROFIsafe message (F-monitoring time exceeded) passivates all module
channels.
Table 6- 1 Module signal type and passivation result
Module signal type Passivation result
Fail-safe digital inputs
• Tests are evaluated per channel, in order to allow chan-
nel-granular passivation of defective inputs.
• If a channel fault occurs for a 1oo1 configuration, de-
pending on your configuration, only the affected channel
or all channels may be passivated. For a 1oo2, both in-
puts of the channel group in the 1oo2 configuration are
passivated.
Fail-safe digital outputs
• Tests are evaluated per channel, in order to allow chan-
nel-granular passivation of defective outputs.
• Diagnostic evaluations are performed separately for each
of the two switches of a channel. Depending on your
configuration, failure detection for one switch may lead
to passivation of only the affected channel or all chan-
nels.
Response to faults in the fail-safe system
You should prepare maintenance procedures for your system to assure that return to
operation after a detected fault is controlled and documented.
Perform the following steps:
1.
Diagnosis and repair of the fault
2. Revalidation of the safety function
3. Recording in the service report
Reintegration of a fail-safe module
A channel or module can be reintegrated after diagnostics determine that a fault has cleared
successfully.
You can configure reintegration as automatic or manual. You can make this selection on a per
channel basis in the Device Configuration. Module wide errors such as PROFIsafe