| SIMATIC S7-300, CPU 312C COMPACT CPU WITH MPI, 10 DI/6 DO, 2 FAST COUNTERS (10 KHZ), INTEGRATED 24V DC POWER SUPPLY, 64 KBYTE WORKING MEMORY, FRONT CONNECTOR (1 X 40PIN) AND MICRO MEMORY CARD REQUIRED |
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General information |
Hardware product version | 01 |
Firmware version | V3.3 |
Engineering with |
Programming package | STEP 7 V5.5 + SP1 or higher or STEP 7 V5.3 + SP2 or higher with HSP 203 |
Supply voltage |
24 V DC | Yes |
permissible range, lower limit (DC) | 19.2 V |
permissible range, upper limit (DC) | 28.8 V |
External protection for supply cables (recommendation) | Miniature circuit breaker, type C; min 2 A; miniature circuit breaker type B, min. 4 A |
Mains buffering |
Mains/voltage failure stored energy time | 5 ms |
Repeat rate, min. | 1 s |
Digital outputs |
Load voltage L+ |
Rated value (DC) | 24 V |
Reverse polarity protection | No |
Input current |
Current consumption (rated value) | 570 mA |
Current consumption (in no-load operation), typ. | 90 mA |
Inrush current, typ. | 5 A |
I²t | 0.7 A²·s |
Digital outputs |
from load voltage L+, max. | 25 mA |
Power losses |
Power loss, typ. | 8 W |
Memory |
Work memory |
integrated | 64 kbyte |
expandable | No |
Size of retentive memory for retentive data blocks | 64 kbyte |
Load memory |
pluggable (MMC) | Yes |
pluggable (MMC), max. | 8 Mbyte |
Data management on MMC (after last programming), min. | 10 a |
Backup |
present | Yes; Guaranteed by MMC (maintenance-free) |
without battery | Yes; Program and data |
CPU processing times |
for bit operations, min. | 0.1 µs |
for word operations, min. | 0.24 µs |
for fixed point arithmetic, min. | 0.32 µs |
for floating point arithmetic, min. | 1.1 µs |
CPU-blocks |
Number of blocks (total) | 1024; (DBs, FCs, FBs); the maximum number of loadable blocks can be reduced by the MMC used. |
DB |
Number, max. | 1024; Number range: 1 to 16000 |
Size, max. | 64 kbyte |
FB |
Number, max. | 1024; Number range: 0 to 7999 |
Size, max. | 64 kbyte |
FC |
Number, max. | 1024; Number range: 0 to 7999 |
Size, max. | 64 kbyte |
OB |
Description | see instruction list |
Size, max. | 64 kbyte |
Number of free cycle OBs | 1; OB 1 |
Number of time alarm OBs | 1; OB 10 |
Number of delay alarm OBs | 2; OB 20, 21 |
Number of time interrupt OBs | 4; OB 32, 33, 34, 35 |
Number of process alarm OBs | 1; OB 40 |
Number of startup OBs | 1; OB 100 |
Number of asynchronous error OBs | 4; OB 80, 82, 85, 87 |
Number of synchronous error OBs | 2; OB 121, 122 |
Nesting depth |
per priority class | 16 |
additional within an error OB | 4 |
Counters, timers and their retentivity |
S7 counter |
Number | 256 |
Retentivity |
adjustable | Yes |
lower limit | 0 |
upper limit | 255 |
preset | Z 0 to Z 7 |
Counting range |
lower limit | 0 |
upper limit | 999 |
IEC counter |
present | Yes |
Type | SFB |
Number | Unlimited (limited only by RAM capacity) |
S7 times |
Number | 256 |
Retentivity |
adjustable | Yes |
lower limit | 0 |
upper limit | 255 |
preset | No retentivity |
Time range |
lower limit | 10 ms |
upper limit | 9990 s |
IEC timer |
present | Yes |
Type | SFB |
Number | Unlimited (limited only by RAM capacity) |
Data areas and their retentivity |
retentive data area, total | All, max. 64 KB |
Flag |
Number, max. | 256 byte |
Retentivity available | Yes; MB 0 to MB 255 |
Retentivity preset | MB 0 to MB 15 |
Number of clock memories | 8; 1 memory byte |
Data blocks |
Number, max. | 1024; Number range: 1 to 16000 |
Size, max. | 64 kbyte |
Retentivity adjustable | Yes; via non-retain property on DB |
Retentivity preset | Yes |
Local data |
per priority class, max. | 32 kbyte; Max. 2048 bytes per block |
Address area |
I/O address area |
Inputs | 1024 byte |
Outputs | 1024 byte |
of which, distributed |
Inputs | none |
Outputs | Назад в раздел
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