Product overview
3.2 Application
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
Standard CPU for small to
PN
mid-range applications
CPU 1513‑1
Standard CPU for mid-range
PN
applications
CPU 1515‑2
Standard CPU for mid-range
PN
to large applications
CPU 1516‑3
Standard CPU for demanding
PN/DP
applications and communica
tion tasks
CPU 1517‑3
Standard CPU for demanding
PN/DP
applications and communica
tion tasks
CPU 1518‑4
Standard CPU for high-per
PN/DP
formance applications,
demanding communication
tasks and very short reaction
times
CPU 1518‑4
Standard CPU for high-per
PN/DP MFP
formance applications,
demanding communication
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.
14
PROFIBUS
PROFINET
interfaces
IO RT/IRT
IO RT inter
interfaces
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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 1515-2 PN (6ES7515-2AN03-0AB0)
Equipment Manual, 11/2022, A5E46416198-AC
Work
Processing
memory
time for bit
operations
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