SIEMENS S7-1500 Central processing units – Compact CPUs

OverviewCompact CPUs

  • Two compact CPUs with different performance levels and with integrated technological functions and integrated I/Os:
    • CPU 1511C-1 PN
    • CPU 1512C-1 PN

Note

SIMATIC Memory Card required for operating the CPUs

Characteristics

CPU 1511C-1 PN

CPU 1512C-1 PN

Work memory for program, integrated

175 KB

250 KB

Work memory for data, integrated

1 MB

1.5 MB

Load memory

Plug-in via SIMATIC memory card

Plug-in via SIMATIC memory card

Display diagonal

3.45 cm

3.45 cm

Command execution times

  • Bit operations

0.06 µs

0.048 µs

  • Word operations

0.072 µs

0.058 µs

  • Fixed-point operations

0.096 µs

0.077 µs

  • Floating-point operations

0.384 µs

0.307 µs

Bit memories, timers, counters

S7 counters/timers

2048 each

2048 each

IEC counters

Any number (only limited by the work memory)

IEC timers

Any number (only limited by the work memory)

Bit memories

16 KB

16 KB

I/O address range

Inputs

32 KB (all inputs are stored in the process image)

Outputs

32 KB (all outputs are stored in the process image)

Motion control

Typical number of positioning axes (at 4 ms servo/IPO cycle)

5

Max. number of positioning axes

10

Integrated inputs/outputs

Digital inputs (integrated)

16

32

Digital outputs (integrated)

16

32

Analog inputs (integrated)

5 (4 x U/I, 1 x RTD)

5 (4 x U/I, 1 x RTD)

Analog outputs (integrated)

2

2

Communication

PtP

Yes (via CM)

Yes (via CM)

PROFINET

Yes (via CM)

Yes (via CM)

PROFINET IO IRT

1 x PN IO IRT
(2-port switch)

1 x PN IO IRT
(2-port switch)

PROFIBUS

Yes (via CM)

Yes (via CM)

Web server

Yes

Yes

Integrated technological functions

High-speed counters (HSC)

6 (max. 100 kHz)

6 (max. 100 kHz)

Frequency meters

6 (max. 100 kHz)

6 (max. 100 kHz)

Period measurement

6 channels

6 channels

Application

Two compact CPUs with differing performance ranges are available for SIMATIC S7-1500:

  • CPU 1511C-1 PN:
    with integrated I/Os and technological functions for applications with medium requirements on the program scope and processing speed, for distributed setup via PROFINET IO.
  • CPU 1512C-1 PN:
    with integrated I/Os and technological functions for applications with medium requirements on the program scope and processing speed, for distributed setup via PROFINET IO.