Siemens SIMATIC S7-1500 Manual page 14

Product overview
3.2 Applications of the S7-1500 CPUs
Performance segments of standard 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 3-1 Standard CPUs
CPU Performance segment
CPU 1511‑1 PN Standard CPU for small to
mid-range applications
CPU 1513‑1 PN Standard CPU for mid-
range applications
CPU 1515‑2 PN Standard CPU for mid-
range to large applica­
tions
CPU 1516‑3 Standard CPU for high-
PN/DP end applications and
communication tasks
CPU 1517‑3 Standard CPU for high-
PN/DP end applications and
communication tasks
CPU 1518‑4 Standard CPU for high-
PN/DP performance applica­
tions, demanding com­
munication tasks and
very short reaction times
CPU 1518‑4 PN/­ Standard CPU for high-
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
Performance segments of redundant CPUs
The CPUs of the S7-1500R/H redundant system offer a high degree of reliability and system
availability. A redundant configuration of the most important automation components
reduces the likelihood of production downtimes and the consequences of component errors.
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PROFIBUS PROFINET
interfaces IO RT/IRT IO RT inter­
interfaces
-- 1
-- 1
-- 1
1 1
1 1
1 1
1 1
PROFINET Basic
PROFINET
face functional­
ity
-- --
-- --
1 --
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
1.8 MB 25 ns
3.1 MB 25 ns
5.5 MB 6 ns
9.5 MB 6 ns
10 MB 2 ns
66 MB 1 ns
116* MB 1 ns