Siemens SIMATIC S7-1500 Manual page 15

The higher the risks and costs of a production downtime, the more worthwhile the use of a
redundant system. The avoidance of production downtimes compensates for the generally
higher investment costs.
Table 3-2 Redundant CPUs
CPU Performance segment
CPU 1513R‑1 PN Redundant CPU for smal­
ler to mid-range applica­
tions
CPU 1515R-2 PN Redundant CPU for mid-
range to large applica­
tions
CPU 1517H-3 PN Redundant CPU for
demanding applications
and communication tasks
CPU 1518HF-4 PN Fail-safe and redundant
CPU for demanding
applications and commu­
nication tasks
Performance segments of compact CPUs
The compact CPUs can be used for smaller to mid-range applications and have an integrated
analog and digital on-board I/O as well as integrated technology functions.
Table 3-3 Compact CPUs
CPU Performance segment
CPU 1511C‑1 PN Compact CPU for small to
mid-range applications
CPU 1512C‑1 PN Compact CPU for mid-
range applications
The following table shows the specific properties of the Compact CPUs.
Integrated analog inputs/outputs
Integrated digital inputs/outputs
High-speed counters
Frequency meters
Period duration measurement
CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
Equipment Manual, 11/2022, A5E40882737-AC
PROFIBUS PROFINET
interfaces IO RT/IRT IO RT inter­
interfaces
-- 1
-- 1
-- 1
-- 1
PROFIBUS PROFINET
interfaces IO RT/IRT IO RT inter­
interfaces
-- 1
-- 1
CPU 1511C‑1 PN
5 inputs/2 outputs
16 inputs/16 outputs
6
6 (max. 100 kHz)
6 channels
3.2 Applications of the S7-1500 CPUs
PROFINET Basic
PROFINET
face functional­
ity
-- --
-- 1
-- 1
-- 2
PROFINET Basic
PROFINET
face functional­
ity
-- --
-- --
CPU 1512C‑1 PN
5 inputs/2 outputs
32 inputs/32 outputs
6 (max. 100 kHz)
6 channels
Product overview
Work memory Pro­
cessing
time for
bit opera­
tions
3.1 MB 50 ns
5.5 MB 20 ns
10 MB 4 ns
69 MB 4 ns
Work memory Pro­
cessing
time for
bit opera­
tions
1.175 MB 60 ns
1.25 MB 48 ns
6
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