Siemens SIMATIC S7-1500 CPU 1511-1 PN

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 PROFIBUS
interfaces
PROFINET
IO RT/IRT
interfaces
PROFINET
IO RT inter
face
Basic
PROFINET
functional
ity
Work
memory
Processing
time for bit
operations
CPU1511‑1
PN
Standard CPU for small to
mid-range applications
-- 1 -- -- 1.8MB 25ns
CPU1513‑1
PN
Standard CPU for mid-range
applications
-- 1 -- -- 3.1 MB 25ns
CPU1515‑2
PN
Standard CPU for mid-range
to large applications
-- 1 1 -- 5.5 MB 6ns
CPU1516‑3
PN/DP
Standard CPU for demanding
applications and communica
tion tasks
1 1 1 -- 9.5 MB 6ns
CPU1517‑3
PN/DP
Standard CPU for demanding
applications and communica
tion tasks
1 1 1 -- 10MB 2ns
CPU1518‑4
PN/DP
Standard CPU for high-per
formance applications,
demanding communication
tasks and very short reaction
times
1 1 1 1 66MB 1ns
CPU1518‑4
PN/DP MFP
Standard CPU for high-per
formance applications,
demanding communication
tasks, very short reaction
times and C/C++ blocks for
the user program
1 1 1 1 116*MB 1ns
* 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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CPU 1511-1 PN (6ES7511-1AL03-0AB0)
Equipment Manual, 11/2022, A5E40869673-AC
Product overview
3.2 Application