Siemens SIMATIC S7-1500 Manual page 16

You can choose between CPUs with various levels of performance and a comprehensive
range of modules with many convenient functions. Fail-safe CPUs enable use in fail-safe
applications. The modular design allows you to use only the modules that you need for your
application. The controller can be retrofitted with additional modules at any time to expand
its range of tasks.
High industrial suitability due to the high resistance to EMC, shock and vibration enable
universal use of the SIMATIC S7-1500, S7-1500R/H and S7-1500T automation systems.
Performance segments of the CPUs
The CPUs can be used for smaller and mid-range applications, as well as for the high-end
range of machine and plant automation.
Table 2- 1 Standard CPUs
CPU Performance segment
CPU 1511-1 PN Standard CPU for small
to mid-range applica-
tions
CPU 1513-1 PN Standard CPU for mid-
range applications
CPU 1515-2 PN Standard CPU for mid-
range to large applica-
tions
CPU 1516- Standard CPU for high-
3 PN/DP end applications and
communication tasks
CPU 1517- Standard CPU for high-
3 PN/DP end applications and
communication tasks
CPU 1518- Standard CPU for high-
4 PN/DP performance applica-
tions, demanding com-
munication tasks and
very short reaction
times
CPU 1518- Standard CPU for high-
4 PN/DP MFP performance applica-
tions, demanding com-
munication tasks, very
short reaction times and
C/C++ blocks for the
user program
* 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, 07/2021, A5E40882737-AB
PROFIBUS PROFINET
interfaces IO RT/IRT
interfaces
-- 1
-- 1
-- 1
1 1
1 1
1 1
1 1
2.2 Applications of the S7-1500 CPUs
PROFINET Basic
IO RT PROFINET
interface functional-
ity
-- --
-- --
1 --
1 --
1 --
1 1
1 1
Product overview
Work Pro-
memory cessing
time for
bit oper-
ations
1.15 MB 60 ns
1.8 MB 40 ns
3.5 MB 30 ns
6 MB 10 ns
10 MB 2 ns
66 MB 1 ns
116* MB 1 ns
15