| | SIMATIC S7-300, CPU 312 IFM FOR EXPANDED TEMPERATURE RANGE CENTRAL PROCESSING UNIT WITH 10 DI/6 DO, 1 X 20 PIN., COUNTER, FREQUENCY MEASUREMENT INTEGRATED POWER SUPPLY 24 V DC 6 KBYTES WORKING MEMORY |
| |
| 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 | 800 mA; 0.8 A + 0.5 A per fully loaded output |
| Inrush current, max. | 8 A |
| Power losses |
| Power loss, typ. | 9 W; incl. integrated inputs/outputs |
| Memory |
| Work memory |
| integrated | 6 kbyte; 2 K instructions RAM (integrated); 1 instruction means 3 bytes on average |
| Load memory |
| integrated FEPROM, max. | 20 kbyte |
| integrated RAM, max. | 20 kbyte |
| Backup |
| without battery | Yes; 72 bytes: memory bits, times, counters, data |
| CPU processing times |
| for bit operations, min. | 0.6 µs |
| for bit operations, max. | 1.2 µs |
| for word operations, min. | 2 µs |
| for fixed point arithmetic, min. | 3 µs |
| for floating point arithmetic, min. | 60 µs |
| for timer/counter operations, min. | 15 µs |
| CPU-blocks |
| DB |
| Number, max. | 63 |
| Size, max. | 6 kbyte |
| FB |
| Number, max. | 32 |
| Size, max. | 6 kbyte |
| FC |
| Number, max. | 32 |
| Size, max. | 6 kbyte |
| OB |
| Description | see instruction list |
| Size, max. | 6 kbyte |
| Nesting depth |
| per priority class | 8 |
| Counters, timers and their retentivity |
| S7 counter |
| Number | 32 |
| of which retentive without battery |
| adjustable | Yes |
| lower limit | 0 |
| upper limit | 31 |
| Counting range |
| lower limit | 1 |
| upper limit | 999 |
| S7 times |
| Number | 64 |
| Time range |
| lower limit | 10 ms |
| upper limit | 9990 s |
| Data areas and their retentivity |
| Flag |
| Number, max. | 128 byte |
| Retentivity available | Yes; MB 0 to MB 127 |
| of which retentive without battery | 0 to 576 (M 0.0 to M 71.7, adjustable) |
| Retentivity preset | MB 0 to MB 15 |
| Address area |
| Process image |
| Inputs | 32 byte |
| Outputs | 32 byte |
| Digital channels |
| Inputs | 256 |
| Outputs | 256 |
| Analog channels |
| Inputs | 64 |
| Outputs | 32 |
| Addressing volume |
| Outputs | 64 byte |
| Inputs | 64 byte |
| Address space per module |
| Address space per module, max. | 128 byte; 128 bytes/128 bytes |
| Hardware configuration |
| Racks, max. | 1 |
| Modules per rack, max. | 8 |
| Expansion devices, max. | 0 |
| Connectable programming devices/PCs | PGs/PCs with STEP 7 connectable via MPI interface |
| Number of modules per DP slave interface, max. | 8 |
| Number of DP masters |
| via CP | 1; CP 342-5 |
| Time of day |
| Clock |
| Software clock | Yes |
| Digital inputs |
| Number/binary inputs | 10; of which 4 channels can be used for process alarms or integrated functions |
| 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. | 7 mA; Min. 2 mA |
| Input delay (for rated value of input voltage) |
| for standard inputs |
| at "0" to "1", max. | 5 ms; typically 3 ms |
| for interrupt inputs |
| at "0" to "1", max. | 50 µs |
| for counter/technological functions |
| at "0" to "1", max. | 50 µs |
| Cable length |
| Cable length, shielded, max. | 1000 m; 100 m for alarm and counter inputs |
| 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 | 30 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 40 to 60 °C, max. | 500 mA |
| for signal "1" minimum load current | 5 mA |
| for signal "0" residual current, max. | 0.5 mA |
| Switching frequency |
| with resistive load, max. | 100 Hz |
| with inductive load, max. | 0.5 Hz |
| Aggregate current of outputs (per group) |
| all mounting positions |
| up to 40 °C, max. | Назад в раздел
|
