| SIMATIC S7-300, CPU 313C COMPACT CPU WITH MPI, 24 DI/16 DO, 4AI, 2AO 1 PT100, 3 FAST COUNTERS (30 KHZ), INTEGRATED 24V DC POWER SUPPLY, 32 KBYTE WORKING MEMORY, MICRO MEMORY CARD REQUIRED |
| Supply voltage |
| Rated value (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 |
| Current consumption (rated value) | 700 mA |
| Inrush current, typ. | 11 A |
| Power loss |
| Power loss, typ. | 14 W |
| Memory |
| Work memory |
| integrated | 32 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, typ. | 0.1 µs |
| for bit operations, max. | 0.2 µs |
| for word operations, typ. | 0.5 µs |
| for fixed point arithmetic, typ. | 1 µs |
| for floating point arithmetic, typ. | 15 µs |
| CPU-blocks |
| DB |
| Number, max. | 127; DB 0 reserved |
| Size, max. | 16 kbyte |
| FB |
| Number, max. | 128 |
| Size, max. | 16 kbyte |
| FC |
| Number, max. | 128 |
| Size, max. | 16 kbyte |
| OB |
| Size, max. | 16 kbyte |
| Number of time alarm OBs | 1 |
| Number of delay alarm OBs | 1 |
| Number of cyclic 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 | 256 |
| Retentivity |
| — adjustable | Yes |
| — lower limit | 0 |
| — upper limit | 256 |
| Counting range |
| — lower limit | 1 |
| — upper limit | 999 |
| IEC counter |
| present | Yes |
| Type | SFB |
| S7 times |
| Number | 256 |
| Retentivity |
| — adjustable | Yes |
| — lower limit | 0 |
| — upper limit | 256 |
| Time range |
| — lower limit | 10 ms |
| — upper limit | 9 990 s |
| IEC timer |
| present | Yes |
| Type | SFB |
| Data areas and their retentivity |
| Flag |
| Number, max. | 256 byte |
| Retentivity available | Yes; MB 0 to MB 255 |
| Address area |
| I/O address area |
| Inputs | 1 kbyte |
| Outputs | 1 kbyte |
| Process image |
| Inputs | 128 byte |
| Outputs | 128 byte |
| Digital channels |
| Inputs | 992 |
| Outputs | 992 |
| Analog channels |
| Inputs | 248 |
| Outputs | 124 |
| Hardware configuration |
| Number of expansion units, max. | 3 |
| Number of DP masters |
| via CP | 1 |
| Number of operable FMs and CPs (recommended) |
| FM | 8 |
| CP, PtP | 4 |
| CP, LAN | 2 |
| Rack |
| Modules per rack, max. | 31 |
| Time of day |
| Clock |
| Hardware clock (real-time) | Yes |
| retentive and synchronizable | Yes |
| Operating hours counter |
| Number | 1 |
| Clock synchronization |
| supported | Yes |
| Digital inputs |
| Number of digital inputs | 24 |
| Input voltage |
| Rated value (DC) | 24 V |
| for signal "0" | -3 to +5V |
| for signal "1" | +15 to +30V |
| Input current |
| for signal "1", typ. | 8 mA |
| Input delay (for rated value of input voltage) |
| for standard inputs |
| — parameterizable | Yes; 0.1 / 0.3 / 3 / 15 ms |
| — at "0" to "1", max. | 15 ms |
| for technological functions |
| — at "0" to "1", max. | 16 µs |
| Cable length |
| shielded, max. | 1 000 m; 100 m for technological functions |
| unshielded, max. | 600 m |
| Digital outputs |
| Number of digital outputs | 16 |
| Short-circuit protection | 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 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 |
| Total current of the outputs (per group) |
| all mounting positions |
| — up to 40 °C, max. | 8 A |
| — up to 60 °C, max. | 4 A |
| Cable length |
| shielded, max. | 1 000 m |
| unshielded, max. | 600 m |
| Analog inputs |
| Number of analog inputs | 4 |
| For voltage/current measurement | 4 |
| For resistance/resistance thermometer measurement | 1 |
| Input ranges |
| Voltage | Yes |
| Current | Yes |
| Resistance thermometer | Yes |
| Resistance | Yes |
| Input ranges (rated values), voltages |
| 0 to +10 V | Yes |
| Input ranges (rated values), currents |
| 0 to 20 mA | Yes |
| -20 mA to +20 mA | Yes |
| 4 mA to 20 mA | Yes |
| Input ranges (rated values), resistance thermometer |
| Pt 100 | Yes |
| Input ranges (rated values), resistors |
| 0 to 600 ohms | Yes |
| Analog outputs |
| Number of analog outputs | 2 |
| Output ranges, voltage |
| 0 to 10 V | Yes |
| -10 V to +10 V | Yes |
| Output ranges, current |
| 0 to 20 mA | Yes |
| -20 mA to +20 mA | Yes |
| 4 mA to 20 mA | Yes |
| Analog value generation for the inputs |
| Integration and conversion time/resolution per channel |
| Resolution with overrange (bit including sign), max. | 12 bit |
| Integration time, parameterizable | Yes; 2,5 / 16,6 / 20 ms |
| Analog value generation for the outputs |
| Integration and conversion time/resolution per channel |
| Resolution with overrange (bit including sign), max. | 12 bit |
| Conversion time (per channel) | 1 ms |
| Encoder |
| Connectable encoders |
| 2-wire sensor | Yes |
| — permissible quiescent current (2-wire sensor), max. | 1.5 mA |
| Errors/accuracies |
| Basic error limit (operational limit at 25 °C) |
| Voltage, relative to input range, (+/-) | 0.7 % |
| Current, relative to input range, (+/-) | 0.7 % |
| Resistance, relative to input range, (+/-) | 3 % |
| Resistance thermometer, relative to input range, (+/-) | 3 % |
| Voltage, relative to output range, (+/-) | 0.7 % |
| Current, relative to output range, (+/-) | 0.7 % |
| Interfaces |
| MPI |
| Cable length, max. | 50 m; without repeater |
| 1. Interface |
| Isolated | No |
| Protocols |
| MPI | Yes |
| PROFIBUS DP master | No |
| PROFIBUS DP slave | No |
| MPI |
| Number of connections | 8 |
| Transmission rate, max. | 187.5 kbit/s |
| Services |
| — PG/OP communication | Yes |
| — Global data communication | Yes |
| — S7 communication | Yes |
| — S7 communication, as client | No |
| — S7 communication, as server | Yes |
| Communication functions |
| PG/OP communication | Yes |
| Global data communication |
| Number of GD packets, transmitter, max. | 4 |
| Number of GD packets, receiver, max. | 4 |
| Size of GD packets, max. | 22 byte |
| S7 basic communication |
| supported | Yes |
| User data per job, max. | 76 byte |
| S7 communication |
| supported | Yes |
| as server | Yes |
| as client | No |
| User data per job, max. | 64 kbyte |
| Number of connections |
| overall | 8 |
| usable for PG communication | 7 |
| — reserved for PG communication | 1 |
| — adjustable for PG communication, max. | 7 |
| usable for OP communication | 7 |
| — reserved for OP communication | 1 |
| — adjustable for OP communication, max. | 7 |
| usable for S7 basic communication | 4 |
| — reserved for S7 basic communication | 4 |
| — adjustable for S7 basic communication, max. | 4 |
| S7 message functions |
| Number of login stations for message functions, max. | 5 |
| Integrated Functions |
| Number of counters | 3 |
| Counting frequency (counter) max. | 30 kHz |
| Frequency measurement | Yes |
| PID controller | Yes |
| Number of pulse outputs | 3 |
| Limit frequency (pulse) | 2.5 kHz |
| Potential separation |
| Potential separation digital inputs |
| Potential separation digital inputs | Yes |
| between the channels, in groups of | 16; 16 and 8 |
| between the channels and backplane bus | Yes |
| Potential separation digital outputs |
| between the channels, in groups of | 8 |
| between the channels and backplane bus | Yes |
| Potential separation analog inputs |
| Potential separation analog inputs | Yes; common for analog I/O |
| between the channels and backplane bus | Yes |
| Potential separation analog outputs |
| Potential separation analog outputs | Yes |
| Configuration |
| Configuration software |
| STEP 7 | Yes; V5.1 SP2 |
| Programming |
| Nesting levels | 8 |
| Programming language |
| — LAD | Yes |
| — FBD | Yes |
| — STL | Yes |
| — SCL | Yes |
| — GRAPH | Yes |
| — HiGraph® | Yes |
| Know-how protection |
| User program protection/password protection | Yes |
| Dimensions |
| Width | 120 mm |
| Height | 125 mm |
| Depth | 130 mm |
| Weights |
| Weight, approx. | 660 g |
| last modified: | 03/13/2019 |
