| SIMATIC S7-400, CPU 414-2 CENTRAL PROCESSING UNIT WITH: 512 KB WORKING MEMORY, (256 KB CODE, 256 KB DATA), 1. INTERFACE MPI/DP 12 MBIT/S, 2. INTERFACE PROFIBUS DP |
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General information |
Firmware version | V4.0 |
Engineering with |
Programming package | STEP7 V5.2 SP1 HF3 or higher with HW update |
CiR - Configuration in RUN |
CiR synchronization time, basic load | 100 ms |
CiR synchronization time, time per I/O slave | 80 µs |
Supply voltage |
24 V DC | Yes |
Input current |
from backplane bus 5 V DC, typ. | 1 A |
from backplane bus 5 V DC, max. | 1.2 A |
from backplane bus 24 V DC, max. | Total current consumption of the components connected to the MPI/DP interfaces, but no more than 150 mA per interface |
Power losses |
Power loss, typ. | 4.5 W |
Backup battery |
Battery operation | |
Backup current, typ. | 550 µA |
Backup current, max. | 1530 µA |
Backup time, max. | 144 d |
Feeding of external backup voltage to CPU | 5 to 15 VDC |
Feeding of external backup voltage to CPU | 5 to 15 VDC |
Memory |
Work memory |
integrated (for program) | 256 kbyte |
integrated (for data) | 256 kbyte |
expandable | No |
Load memory |
expandable FEPROM | Yes; with Memory Card (FLASH) |
expandable FEPROM, max. | 64 Mbyte |
integrated RAM, max. | 256 kbyte |
expandable RAM | Yes; with Memory Card (RAM) |
expandable RAM, max. | 16 Mbyte |
Backup |
present | Yes |
with battery | Yes; all data |
without battery | No |
CPU processing times |
for bit operations, min. | 0.06 µs |
for word operations, min. | 0.06 µs |
for fixed point arithmetic, min. | 0.06 µs |
for floating point arithmetic, min. | 0.18 µs |
CPU-blocks |
DB |
Number, max. | 4095; DB 0 reserved |
Size, max. | 64 kbyte |
FB |
Number, max. | 2048 |
Size, max. | 64 kbyte |
FC |
Number, max. | 2048 |
Size, max. | 64 kbyte |
OB |
Number, max. | see instruction list |
Size, max. | 64 kbyte |
Number of time alarm OBs | 4 |
Number of delay alarm OBs | 4 |
Number of time interrupt OBs | 4 |
Number of process alarm OBs | 4 |
Number of multicomputing OBs | 1 |
Nesting depth |
per priority class | 24 |
additional within an error OB | 1 |
Counters, timers and their retentivity |
S7 counter |
Number | 2048 |
Retentivity |
adjustable | Yes |
lower limit | 0 |
upper limit | 2047 |
preset | Z 0 to Z 7 |
Counting range |
lower limit | 0 |
upper limit | 999 |
IEC counter |
present | Yes |
Type | SFB |
S7 times |
Number | 2048 |
Retentivity |
adjustable | Yes |
lower limit | 0 |
upper limit | 2047 |
preset | No times retentive |
Time range |
lower limit | 10 ms |
upper limit | 9990 s |
IEC timer |
present | Yes |
Type | SFB |
Data areas and their retentivity |
retentive data area, total | Total working and load memory (with backup battery) |
Flag |
Number, max. | 8 kbyte |
Retentivity available | Yes; from MB 0 to MB 8191 |
Retentivity preset | MB 0 to MB 15 |
Number of clock memories | 8; (1 memory byte) |
Data blocks |
Number, max. | 4095; DB 0 reserved |
Size, max. | 64 kbyte |
Local data |
adjustable, max. | 16 kbyte |
preset | 8 kbyte |
Address area |
I/O address area |
Inputs | 8 kbyte |
Outputs | 8 kbyte |
of which, distributed |
MPI/DP interface, inputs | 2 kbyte |
MPI/DP interface, outputs | 2 kbyte |
DP interface, inputs | 6 kbyte; (For each line that is operated in isochronous mode, i.e. to which an OB61 to 62 has been assigned, the distributed IO address areas are halved) |
DP interface, outputs | 6 kbyte; (For each line that is operated in isochronous mode, i.e. to which an OB61 to 62 has been assigned, the distributed IO address areas are halved) |
Process image |
Inputs, adjustable | 8 kbyte |
Outputs, adjustable | 8 kbyte |
Inputs, default | 256 byte |
Outputs, default | 256 byte |
consistent data, max. |
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