SIEMENS S7-1500 Central processing units Fail-safe CPUs

Overviews7-1500 Fail-safe CPUs

  • 7 fail-safe CPUs with graded performances:
    • CPU 1511F-1 PN
    • CPU 1513F-1 PN
    • CPU 1515F-2 PN
    • CPU 1516F-3 PN/DP
    • CPU 1517F-3 PN/DP
    • CPU 1518F-4 PN/DP
    • CPU 1518F-4 PN/DP ODK

Characteristics

CPU 1511F-1 PN

CPU 1513F-1 PN

CPU 1515F-2 PN

CPU 1516F-3 PN/DP

CPU 1517F-3 PN/DP

CPU 1518F-4 PN/DP/
CPU 1518F-4PN/DP ODK

Work memory for program, integrated

225 KB

450 KB

750 KB

1.5 MB

3 MB

6 MB

Work memory for data, integrated

1 MB

1.5 MB

3 MB

5 MB

8 MB

20 MB

Load memory

Plug-in via SIMATIC memory card

Plug-in via SIMATIC memory card

Plug-in via SIMATIC Memory Card

Plug-in via SIMATIC Memory Card

Plug-in via SIMATIC memory card

Plug-in via SIMATIC memory card

Command execution times

  • Bit operations

0.06 µs

0.04 µs

0.03 µs

0.01 µs

0.002 µs

0.001 µs

  • Word operations

0.072 µs

0.048 µs

0.036 µs

0.012 µs

0.003 µs

0.002 µs

  • Fixed-point operations

0.096 µs

0.064 µs

0.048 µs

0.016 µs

0.003 µs

0.002 µs

  • Floating-point operations

0.384 µs

0.256 µs

0.192 µs

0.064 µs

0.012 µs

0.006 µs

Integral interfaces

  • PROFINET IO IRT

1 x PN IO IRT (2-port switch)

1 x PN IO IRT (2-port switch)

1 x PN IO IRT (2-port switch)

1 x PN IO IRT (2-port switch)

1 x PN IO IRT (2-port switch)

1 x PN IO IRT (2-port switch)

  • PROFINET

1 x PN

1 x PN

1 x PN

2 x PN

  • PROFIBUS DP

1 x DP

1 x DP

1 x DP

Standards, approvals, certificates

SIL according to IEC 61508: to SIL3 in each case

PL according to ISO 13849: to PLe in each case

SIL according to IEC 61508: to SIL3 in each case

PL according to ISO 13849: to PLe in each case

SIL according to IEC 61508: to SIL3 in each case

PL according to ISO 13849: to PLe in each case

SIL according to IEC 61508: to SIL3 in each case

PL according to ISO 13849: to PLe in each case

SIL according to IEC 61508: to SIL3 in each case

PL according to ISO 13849: to PLe in each case

SIL according to IEC 61508: to SIL3 in each case

PL according to ISO 13849: to PLe in each case

Application

Various failsafe CPUs with graduated levels of performance are available for the SIMATIC S7-1500:

  • CPU 1511F-1 PN:
    the cost-effective entry-level CPU for standard and fail-safe applications with medium requirements in terms of processing performance and response speed in discrete production technology.
  • CPU 1513F-1 PN:
    the CPU with a medium to large program and data memory for standard and fail-safe applications that also include distributed automation structures alongside central I/O.
  • CPU 1515F-2 PN:
    for standard and failsafe applications with medium/high requirements for program scope and processing speed, for distributed setup via PROFINET IO with PROFIsafe.
  • CPU 1516F-3 PN/DP:
    for applications with medium/high requirements for program scope and processing speed, for distributed configuration via PROFINET IO and PROFIBUS DP with PROFIsafe.
  • CPU  1517F-3 PN/DP:
    for standard and failsafe applications with very high requirements for program scope networking, and for very high requirements regarding processing speed, for distributed setup via PROFINET IO and PROFIBUS DP with PROFIsafe. The additional integrated PROFINET interface with separate IP address can be used for network separation, for example.
  • CPU 1518F-4 PN/DP:
    for standard and failsafe applications with high requirements for program scope and processing speed, for distributed setup via PROFINET IO and PROFIBUS DP with PROFIsafe. The additional integrated PROFINET interface with separate IP address can be used, for example, for network separation.