Siemens SIMATIC S7-1500 CPU 1511-1 PN

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 PROFIBUS
interfaces
PROFINET
IO RT/IRT
interfaces
PROFINET
IO RT inter
face
Basic
PROFINET
functional
ity
Work
memory
Processing
time for bit
operations
CPU1513R-1
PN
Redundant CPU for smaller
to mid-range applications
-- 1 -- -- 3.1 MB 50 ns
CPU
1515R-2PN
Redundant CPU for mid-
range to large applications
-- 1 -- 1 5.5 MB 20ns
CPU
1517H-3PN
Redundant CPU for demand
ing applications and commu
nication tasks
-- 1 -- 1 10MB 4ns
CPU
1518HF-4PN
Fail-safe and redundant CPU
for demanding applications
and communication tasks
-- 1 -- 2 69 MB 4ns
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 PROFIBUS
interfaces
PROFINET
IO RT/IRT
interfaces
PROFINET
IO RT inter
face
Basic
PROFINET
functional
ity
Work memory Pro
cessing
time for
bit opera
tions
CPU1511C-1PN Compact CPU for small to
mid-range applications
-- 1 -- -- 1.175MB 60ns
CPU1512C-1PN Compact CPU for mid-
range applications
-- 1 -- -- 1.25MB 48ns
The following table shows the specific properties of the Compact CPUs.
CPU1511C‑1PN CPU1512C‑1PN
Integrated analog inputs/outputs 5 inputs/2 outputs 5 inputs/2 outputs
Integrated digital inputs/outputs 16 inputs/16 outputs 32 inputs/32 outputs
High-speed counters 6 6
Frequency meters 6 (max. 100 kHz) 6 (max. 100 kHz)
Period duration measurement 6 channels 6 channels
Pulse width modulation (PWM output)
Max. 4 (up to 100 kHz) Max. 4 (up to 100 kHz)
Pulse Train Output (PTO output) Max. 4 (up to 100 kHz) Max. 4 (up to 100 kHz)
Frequency output Up to 100 kHz Up to 100 kHz
15
Product overview
3.2 Application
CPU 1511-1 PN (6ES7511-1AL03-0AB0)
Equipment Manual, 11/2022, A5E40869673-AC