Siemens SIMATIC S7-1200 Produktinformation Seite 14

Areas of application
Main areas of application of the S7-1200/1500 F-CPUs are personal and machine safety and burner controls. In addition to
the safety program, you can also program standard applications.
You can operate the S7-1200/1500 F-CPUs in safety or standard mode.
The installed STEP 7 Safety license is required for safety mode. If the license for STEP 7 Safety is not installed, you can use the
S7-1200/1500 F-CPUs in standard mode. In standard mode, S7-1200/1500 F-CPUs behave like standard S7-1200/1500 CPUs.
Additional information on using the S7-1200/1500 F-CPUs in safety mode is available in the programming and operating
manual "SIMATIC Safety - Configuring and Programming (http://support.automation.siemens.com/WW/view/en/54110126)".
Additional information on using the S7-1200 F-CPUs in standard mode is available in the "S7-1200 Programmable controller
(https://support.industry.siemens.com/cs/ww/en/view/109772940)" system manual.
Additional information on using the S7-1500 F-CPUs in standard mode is available in the relevant manuals for the S7-1500
and the standard-T-CPUs S7-1500 at the following links:
• CPUs 151x (http://support.automation.siemens.com/WW/view/en/67295862/133300)
• CPUs 151xT (https://support.industry.siemens.com/cs/ww/en/ps/22057/man)
• CPUs 151xSP (http://support.automation.siemens.com/WW/view/en/90466439/133300)
• CPU 151xpro-2 PN (https://support.industry.siemens.com/cs/ww/en/ps/13906/man)
• S7-1500 Software Controller (https://support.industry.siemens.com/cs/ww/en/view/109782375)
You can find the latest firmware for the relevant F-CPU by searching for downloads with the respective article number in the
Industry Online Support (https://support.industry.siemens.com).
Note
Observe any application-specific requirements, for example on mains buffering for power supplies/power packs.
PFD and PFH values for F-CPUs
avg
Below are the probability of failure on demand values (PFD
20 years and an MTTR of 100 hours:
Low demand mode
low demand mode
According to IEC 61508:2010:
PFD = Average probability of dangerous failure on
avg
demand
14
< 2E-05
, PFH values) for the above-named F-CPUs with a mission time of
avg
High demand or continuous mode
high demand/continuous mode
According to IEC 61508:2010:
PFH = Average frequency of a dangerous failure [h
< 1E-09 up to an operational altitude of 3 000 m or
< 2E-09 at an operating altitude greater than 3 000 m up to
5 000 m
A5E35635424-AM, 11/2022
]
-1
F-CPUs