| | SIMATIC S7-300, CPU 312C COMPACT CPU WITH MPI, 10 DI/6 DO, 2 FAST COUNTERS (10 KHZ), INTEGRATED 24V DC POWER SUPPLY, 16 KBYTE WORKING MEMORY, MICRO MEMORY CARD REQUIRED |
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| Supply voltage |
| Rated voltage/DC | 24 V |
| permissible range, lower limit (DC) | 20.4 V |
| permissible range, upper limit (DC) | 28.8 V |
| Load voltage L+ |
| Rated value (DC) | 24 V |
| permissible range, lower limit (DC) | 20.4 V |
| permissible range, upper limit (DC) | 28.8 V |
| Input current |
| Rated value at 24 V DC | 500 mA |
| Inrush current, max. | 11 A |
| Power losses |
| Power loss, max. | 6 W; incl. integrated inputs/outputs |
| Memory |
| Work memory |
| integrated | 16 kbyte; For program and data |
| expandable | No |
| Load memory |
| expandable FEPROM | Yes; with Micro Memory Card (MMC) |
| expandable FEPROM, max. | 4 Mbyte |
| Backup |
| present | Yes; Guaranteed by MMC (maintenance-free) |
| without battery | Yes; Program and data |
| CPU processing times |
| for bit operations, min. | 0.2 µs |
| for bit operations, max. | 0.4 µs |
| for word operations, min. | 1 µs |
| for fixed point arithmetic, min. | 2 µs |
| for floating point arithmetic, min. | 30 µs |
| CPU-blocks |
| DB |
| Number, max. | 63; DB 0 reserved |
| FB |
| Number, max. | 64 |
| FC |
| Number, max. | 64 |
| OB |
| Size, max. | 16 kbyte |
| Number of time alarm OBs | 1 |
| Number of delay alarm OBs | 1 |
| Number of time interrupt OBs | 1 |
| Number of process alarm OBs | 1 |
| Nesting depth |
| per priority class | 8 |
| additional within an error OB | 4 |
| Counters, timers and their retentivity |
| S7 counter |
| Number | 128 |
| of which retentive without battery |
| adjustable | Yes |
| lower limit | 0 |
| upper limit | 128 |
| Counting range |
| lower limit | 1 |
| upper limit | 999 |
| IEC counter |
| present | Yes |
| Type | SFB |
| S7 times |
| Number | 128 |
| Retentivity |
| adjustable | Yes |
| lower limit | 0 |
| upper limit | 128 |
| Time range |
| lower limit | 10 ms |
| upper limit | 9990 s |
| IEC timer |
| present | Yes |
| Type | SFB |
| Data areas and their retentivity |
| Flag |
| Number, max. | 128 byte |
| Retentivity available | Yes; MB 0 to MB 127 |
| Retentivity preset | MB 0 to MB 15 |
| Address area |
| I/O address area |
| Inputs | 1 kbyte |
| Outputs | 1 kbyte |
| Process image |
| Inputs | 128 byte |
| Outputs | 128 byte |
| Digital channels |
| Inputs | 256 |
| Outputs | 256 |
| Analog channels |
| Inputs | 64 |
| Outputs | 32 |
| Hardware configuration |
| Racks, max. | 1 |
| Modules per rack, max. | 8 |
| Expansion devices, max. | 0 |
| Number of DP masters |
| via CP | 1 |
| Number of operable FMs and CPs (recommended) |
| FM | 4 |
| CP, point-to-point | 2 |
| CP, LAN | 1 |
| Time of day |
| Clock |
| Software clock | Yes |
| battery-backed and synchronizable | No |
| Operating hours counter |
| Number | 1 |
| Clock synchronization |
| supported | Yes |
| Digital inputs |
| Number/binary inputs | 10 |
| Input voltage |
| Rated value, DC | 24 V |
| for signal "0" | -3 to +5 V |
| for signal "1" | 15 to 30 V |
| Input current |
| for signal "1", typ. | 8 mA |
| Input delay (for rated value of input voltage) |
| for standard inputs |
| Parameterizable | Yes |
| at "0" to "1", max. | 100 µs; 0.1 / 0.3 / 3 / 15 ms |
| for counter/technological functions |
| at "0" to "1", max. | 50 µs |
| Cable length |
| Cable length, shielded, max. | 1000 m; 100 m for technological functions |
| Cable length unshielded, max. | 600 m |
| Digital outputs |
| Number/binary outputs | 6 |
| Functionality/short-circuit strength | Yes; Clocked electronically |
| Limitation of inductive shutdown voltage to | L+ (-48 V) |
| Output voltage |
| for signal "1", min. | L+ (-0.8 V) |
| Output current |
| for signal "1" permissible range for 0 to 40 °C, max. | 500 mA |
| for signal "1" permissible range for 0 to 60 °C, max. | Назад в раздел
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