Standard CPUs

Characteristics

CPU 1507S (V21.9.7)

CPU 1508S (V21.9.7)

CPU 1507S (V30.1)

CPU 1508S (V30.1)

Work memory for program, integrated

5 MB

10 MB

5 MB

10 MB

Work memory for data, integrated

20 MB

100 MB

20 MB

100 MB

Load memory

320 MB

920 MB

320 MB

920 MB

Command execution times (with IPC BX-39A, Intel Xeon^® processor)

• Bit operations

0.001 µs

0.001 µs

0.001 µs

0.001 µs

• Word operations

0.002 µs

0.002 µs

0.002 µs

0.002 µs

• Fixed-point operations

0.002 µs

0.002 µs

0.002 µs

0.002 µs

• Floating-point operations

0.006 µs

0.006 µs

0.006 µs

0.006 µs

Bit memories, timers, counters

S7 counters/timers

2 048 each

2 048 each

2 048 each

2 048 each

IEC counters

Any number (limited only by work memory)

Any number (limited only by work memory)

Any number (limited only by work memory)

Any number (limited only by work memory)

IEC timers

Any number (limited only by work memory)

Any number (limited only by work memory)

Any number (limited only by work memory)

Any number (limited only by work memory)

Bit memories

16 KB

16 KB

16 KB

16 KB

Motion

No. of axes

Up to 60

Up to 60

Up to 60

Up to 60

Communication

PROFINET

Yes (via PC interfaces)

Yes (via PC interfaces)

Yes (via PC interfaces)

Yes (via PC interfaces)

• Number of interfaces

2

2

2

2

• Of which with PN IO

1

1

1

1

• Number of IO devices

256 (with CP 1625)
8 KB of IO data

384 (with CP 1625)
16 KB of IO data

256 (with CP 1625)
8 KB of IO data

384 (with CP 1625)
16 KB of IO data

PROFIBUS

Yes (via PC interfaces)

Yes (via PC interfaces)

Yes (via PC interfaces)

Yes (via PC interfaces)

Web server

Yes

Yes

Yes

Yes

SIMATIC PC

Box PC

• IPC227E
• IPC427E (recommended)
• IPC627D
• IPC627E
• IPC827D

• IPC427E
• IPC627D
• IPC627E (recommended)
• IPC827D

• IPC227G
• IPC427E
• IPC BX-39A (recommended)
• IPC627E

• IPC427E
• IPC BX-39A
• IPC627E (recommended)

Panel PC

• IPC277E
• IPC477E (recommended)
• IPC677D
• IPC677E

• IPC477E
• IPC677D
• IPC677E (recommended)

• IPC277G
• IPC477E
• IPC PX-39A (recommended)
• IPC677E
  

• IPC477E
• IPC PX-39A
• IPC677E (recommended)
  

Rack PC

• IPC647D
• IPC647E
• IPC847D
• IPC847E

• IPC647D
• IPC647E (recommended)
• IPC847D
• IPC847E (recommended)

• IPC647E
• IPC847E
  

• IPC647E (recommended)
• IPC847E (recommended)