Siemens SIMATIC S7-1500 Manual page 18

Product overview
3.2 Applications of the S7-1500 CPUs
CPU Performance segment
CPU 1518F‑4 Fail-safe CPU for high-
PN/DP performance applica­
tions, demanding com­
munication tasks and
very short reaction times
CPU 1518F-4 Fail-safe CPU for high-
PN/DP MFP performance applica­
tions, demanding com­
munication tasks, very
short reaction times and
C/C++ blocks for the user
program
CPU 1518TF-4 Technology CPU for high-
PN/DP performance motion con­
trol applications with
large quantities,
demanding communica­
tion tasks and very short
reaction times
* 50 MB of the integrated work memory is reserved for the function library of CPU runtime
In addition to the CPUs, further components such as SINAMICS drives dispose of integrated
safety functions. Additional information about integrated safety functions in drives can be
found in the manuals for the respective products.
Power segment of the CPU 1518-4 PN/DP MFP
The CPU 1518-4 PN/DP MFP can be used for the high-end area of machine and plant
automation.
The CPU 1518-4 PN/DP MFP offers you the following options:
• Executing STEP 7 blocks of the "standard" user program
• Executing applications that were programmed in C/C++ with the Open Development Kit
ODK
– Run C/C++ code synchronously in the CPU cycle via the CPU function library
– Run C/C++ applications as separate applications parallel to CPU runtime
The CPU 1518-4 PN/DP MFP is suitable for:
• Complex protocol connections according to IEC 61850 and SECS/GEM
• Database connections, for example, SQL databases
• Data preprocessing for preparing complex data, for example, for management decisions
• Executing complex algorithms, for example, for optimizing processes
18
PROFIBUS PROFINET
interfaces IO RT/IRT IO RT inter­
interfaces
1 1
1 1
1 1
PROFINET Basic
PROFINET
face functional­
ity
1 1
1 1
1 1
CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
Equipment Manual, 11/2022, A5E40882737-AC
Work memory Pro­
cessing
time for
bit opera­
tions
69 MB 1 ns
119* MB 1 ns
69 MB 1 ns