Siemens SIMATIC S7-1500 Manual page 17

These fail-safe CPUs allow the processing of standard and safety programs on a single CPU.
This allows fail-safe data to be evaluated in the standard user program. The integration also
provides the system advantages and the extensive functionality of SIMATIC for fail-safe
applications.
The fail-safe CPUs are certified for use in safety mode up to:
• Safety class (Safety Integrity Level) SIL 3 according to IEC 61508:2010
• Performance Level (PL) e and Category 4 according to ISO 13849-1:2015 or EN
ISO 13849-1:2015
Additional password protection for F-configuration and F-program is set up for IT security.
Table 3-5 Fail-safe CPUs
CPU Performance segment
CPU 1511F‑1 PN Fail-safe CPU for smaller
to medium-sized applica­
tions
CPU 1511TF‑1 PN Fail-safe technology CPU
for small to mid-range
applications
CPU 1513F‑1 PN Fail-safe CPU for
medium-sized applica­
tions
CPU 1515F‑2 PN Fail-safe CPU for
medium-sized to large
applications
CPU 1515TF‑2 PN Fail-safe technology CPU
for high-end applications
and communication tasks
CPU 1516F‑3 Fail-safe CPU for
PN/DP demanding applications
and communications
tasks
CPU 1516TF‑3 P­ Fail-safe technology CPU
N/DP for high-end applications
and communication tasks
CPU 1517F‑3 Fail-safe CPU for
PN/DP demanding applications
and communications
tasks
CPU 1517TF-3 Fail-safe technology CPU
PN/DP for high-end applications
and communication tasks
* 50 MB of the integrated work memory is reserved for the function library of CPU runtime
CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
Equipment Manual, 11/2022, A5E40882737-AC
PROFIBUS PROFINET
interfaces IO RT/IRT IO RT inter­
interfaces
-- 1
-- 1
-- 1
-- 1
-- 1
1 1
1 1
1 1
1 1
3.2 Applications of the S7-1500 CPUs
PROFINET Basic
PROFINET
face functional­
ity
-- --
-- --
-- --
1 --
1 --
1 --
1 --
1 --
1 --
Product overview
Work memory Pro­
cessing
time for
bit opera­
tions
1.95 MB 25 ns
1.95 MB 25 ns
3.4 MB 25 ns
6 MB 6 ns
6 MB 6 ns
10.5 MB 6 ns
10.5 MB 6 ns
11 MB 2 ns
11 MB 2 ns
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