Siemens SIMATIC S7-1200 Notice De Service page 11

Functional safety
WARNING
Danger to humans and the environment
To avoid danger to people and the environment, under no circumstances may you bypass safety functions or take measures
that amount to or result in bypassing safety functions. The manufacturer is not liable for the consequences of such
manipulation or for damages resulting from the failure to heed this warning.
Perform a safety inspection for safety-related functions throughout the entire system, including all safety-related components.
For fail-safe I/O, observe the notes and warnings in the
(
https://support.industry.siemens.com/cs/ww/en/view/109744173
• Connecting/wiring
• Parameter assignment
• Status, fault displays and alarms
Maintenance (recurring tests, software/firmware updates)
•
Checking for proper function
•
• Technical specifications
You can find use cases for achieving the required safety class (SIL) in the
(
https://support.industry.siemens.com/cs/ww/en/view/109744173
WARNING
Check the firmware version for fail-safe approval
When using a new firmware version, check whether the firmware version is approved for the respective fail-safe I/O.
The attachments of the certificate (https://support.automation.siemens.com/WW/view/en/49368678/134200) for SIMATIC
Safety specify the firmware version that is approved.
Ensure that fail-safe capability is enabled for F-CPUs.
The PROFIsafe address must be set or assigned for fail-safe I/O.
Perform function tests for safety functions according to your automation task. They may only be used in production when the
correct operation of the safety-related functions is ensured.
2 Security information
Siemens provides products and solutions with industrial security functions that support the secure operation of plants,
systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and
continuously maintain – a holistic, state-of-the-art industrial security concept. Siemens' products and solutions constitute one
element of such a concept.
Customers are responsible for preventing unauthorized access to their plants, systems, machines and networks. Such systems,
machines and components should only be connected to an enterprise network or the internet if and to the extent such a
connection is necessary and only when appropriate security measures (e.g. firewalls and/or network segmentation) are in
place.
For additional information on industrial security measures that may be implemented, please
(
https://www.siemens.com/industrialsecurity
Siemens' products and solutions undergo continuous development to make them more secure. Siemens strongly recommends
that product updates are applied as soon as they are available and that the latest product versions are used. Use of product
versions that are no longer supported, and failure to apply the latest updates may increase customers' exposure to cyber
threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS Feed
(
https://www.siemens.com/cert
Compact Operating Instructions
A5E51784853-AC, 06/2023
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