| *** SPARE PART*** SIMATIC S7-300, CPU 314 IFM COMPACT CPU WITH MPI, FOR EXPANDED TEMPERATURE RANGE, 16DI/16DO, 4AI/1AO, 2 X 40 PIN, INTEGRATED 24V DC POWER SUPPLY, 32 KBYTE WORKING MEMORY |
| 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) | 1 000 mA |
| Inrush current, typ. | 8 A |
| Power loss |
| Power loss, typ. | 16 W |
| Memory |
| Work memory |
| integrated | 32 kbyte; 32 KB/10 K instructions RAM (integrated); 1 instruction means 3 bytes on average |
| Load memory |
| integrated RAM, max. | 48 kbyte |
| Backup |
| with battery | Yes; all blocks |
| without battery | Yes; 144 bytes: Bit memories, counters, timers and data |
| CPU processing times |
| for bit operations, typ. | 0.3 µs |
| for bit operations, max. | 0.6 µs |
| for word operations, typ. | 1 µs |
| for fixed point arithmetic, typ. | 2 µs |
| for floating point arithmetic, typ. | 50 µs |
| for timer/counter operations, typ. | 12 µs |
| CPU-blocks |
| DB |
| Number, max. | 127 |
| Size, max. | 8 kbyte |
| FB |
| Number, max. | 128 |
| Size, max. | 8 kbyte |
| FC |
| Number, max. | 128 |
| Size, max. | 8 kbyte |
| OB |
| Description | see instruction list |
| Size, max. | 8 kbyte |
| Number of free cycle OBs | 1; OB 1 |
| Number of time alarm OBs | 1; OB 10 |
| Number of cyclic interrupt OBs | 1; OB 35 |
| Number of process alarm OBs | 1; OB 40 |
| Number of startup OBs | 1; OB 100 |
| Nesting depth |
| per priority class | 8 |
| Counters, timers and their retentivity |
| S7 counter |
| Number | 64 |
| Retentivity |
| — adjustable | Yes |
| — lower limit | 0 |
| — upper limit | 63 |
| Counting range |
| — lower limit | 1 |
| — upper limit | 999 |
| S7 times |
| Number | 128 |
| Retentivity |
| — adjustable | Yes |
| — lower limit | 0 |
| — upper limit | 71 |
| Time range |
| — lower limit | 10 ms |
| — upper limit | 9 990 s |
| Data areas and their retentivity |
| Flag |
| Number, max. | 256 byte |
| Retentivity available | Yes; MB 0 to MB 255 |
| of which retentive with battery | 0 to 2 047 (M 0.0 to M 255.7, adjustable) |
| of which retentive without battery | 0 to 1 152 (M 0.0 toM 143.7, adjustable) |
| Address area |
| I/O address area |
| Inputs | 512 byte |
| Outputs | 512 byte |
| Process image |
| Inputs | 128 byte |
| Outputs | 128 byte |
| Digital channels |
| Inputs | 992 |
| Outputs | 992 |
| Analog channels |
| Inputs | 248 |
| Outputs | 124 |
| Addressing volume |
| Inputs | 122 byte |
| Outputs | 122 byte |
| Address space per module |
| Address space per module, max. | 512 byte; 512 byte / 512 byte |
| Hardware configuration |
| Number of expansion units, max. | 3 |
| connectable programming devices/PCs | PGs/PCs with STEP 7 connectable via MPI interface |
| Number of modules per DP slave interface, max. | 16 |
| Number of DP masters |
| via CP | 1; CP 342-5 |
| Number of operable FMs and CPs (recommended) |
| FM | 4 |
| CP, PtP | 2 |
| CP, LAN | 1 |
| Rack |
| Modules per rack, max. | 31 |
| Time of day |
| Clock |
| Hardware clock (real-time) | Yes |
| Digital inputs |
| Number of digital inputs | 20; 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 +5V |
| for signal "1" | +15 to +30V |
| 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 technological functions |
| — at "0" to "1", max. | 50 µs |
| Cable length |
| shielded, max. | 1 000 m; 100 m for alarm and counter inputs |
| unshielded, max. | 600 m |
| Digital outputs |
| Number of digital outputs | 16 |
| Short-circuit protection | 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 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. | 4 A |
| — up to 60 °C, max. | 2 A |
| Cable length |
| shielded, max. | 1 000 m |
| unshielded, max. | 600 m |
| Analog inputs |
| Number of analog inputs | 4 |
| Input ranges |
| Voltage | Yes |
| Current | Yes |
| Input ranges (rated values), currents |
| -20 mA to +20 mA | Yes |
| Input resistance (-20 mA to +20 mA) | 105.5 kΩ |
| Analog outputs |
| Number of analog outputs | 1 |
| Output ranges, voltage |
| -10 V to +10 V | Yes |
| Output ranges, current |
| -20 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 |
| Conversion time (per channel) | 100 µs |
| 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) | 40 µs |
| 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, (+/-) | 0.9 % |
| Current, relative to input range, (+/-) | 0.9 % |
| Voltage, relative to output range, (+/-) | 0.9 % |
| Current, relative to output range, (+/-) | 0.9 % |
| Interfaces |
| MPI |
| Cable length, max. | 9 100 m; Distance between 2 neighboring nodes, max. - without repeaters: 50 m; with 2 repeaters: 1100 m; with 10 repeaters in series: 9100 m; via fiber optic cable: 23.8 km (with 16 star hubs or OLMs) |
| PROFIBUS DP |
| Number of stations per segment, max. | 16 |
| 1. Interface |
| Protocols |
| MPI | Yes |
| MPI |
| Number of nodes, max. | 32; 32 nodes on MPI bus; PG/PC, OP, additional S7-300/400, C7; per CPU max. 4 static and 4 dynamic connections |
| Transmission rate, max. | 187.5 kbit/s |
| Services |
| — PG/OP communication | Yes |
| — Global data communication | Yes |
| — S7 basic communication | Yes |
| — S7 communication | Yes |
| Communication functions |
| PG/OP communication | Yes |
| Global data communication |
| supported | Yes |
| S7 basic communication |
| supported | Yes |
| S7 communication |
| supported | Yes |
| as server | Yes |
| S5 compatible communication |
| supported | Yes; via loadable blocks |
| Standard communication (FMS) |
| supported | Yes; via loadable blocks |
| Number of connections |
| overall | |
| — of which dynamic | 8 |
| — of which static | 4 |
| Integrated Functions |
| Number of counters | 2; 1 counter with 4 inputs or 2 counters with 2 inputs and 2 direction-dependent comparators for each counter; counter frequency 10 kHz; 32 bit (incl. sign) |
| Counting frequency (counter) max. | 10 kHz |
| Frequency measurement | Yes; 1 channel to max. 10 kHz; measurement times 0.1 s, 1 s, 10 s; meas. procedure: calculation of pulse number per meas. time |
| controlled positioning | Yes; 1 channel; position detection via a 24 V asymmetrical incremental encoder; 3 digital inputs are occupied by the encoder (track A, track B, reference point); simple evaluation of the counting pulses (10 kHz) |
| PID controller | Yes; PID closed-loop control function blocks: Continuous controller outputs, binary controller outputs, automatic/manual mode, setpoint limitation |
| Potential separation |
| Potential separation digital inputs |
| between the channels, in groups of | 16; Special inputs in groups of 4, inputs in groups of 16 |
| 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 |
| between the channels, in groups of | 4 |
| between the channels and backplane bus | Yes |
| Potential separation analog outputs |
| between the channels, in groups of | 1 |
| between the channels and backplane bus | Yes |
| Ambient conditions |
| Ambient temperature during operation |
| min. | -25 °C |
| max. | 60 °C |
| Configuration |
| Configuration software |
| STEP 7 | Yes; V5.0 SP1 |
| Programming |
| Command set | Binary logic operations, bracketed operations, result allocation, saving, counting, loading, transferring, comparing, shifting, rotating, complementation, calling blocks, fixed point arithmetic, floating point arithmetic, jump functions |
| Nesting levels | 8 |
| Program processing | free cycle (OB 1), time-controlled (OB 35), clock-time controlled (OB 10), interrupt controlled (OB 40), startup (OB 100) |
| Program organization | Linear, structured |
| System functions (SFC) | Interrupt and error processing, copy data, clock functions, diagnostic functions, module parameterization, operating mode transitions |
| Programming language |
| — SCL | Yes |
| — GRAPH | Yes |
| Software libraries |
| — Process diagnostics | Yes |
| — Software controller | Yes; depending on the required memory space and the resulting execution time |
| Know-how protection |
| User program protection/password protection | Yes |
| Cycle time monitoring |
| lower limit | 1 ms |
| upper limit | 6 000 ms |
| adjustable | Yes |
| preset | 150 ms |
| Dimensions |
| Width | 160 mm |
| Height | 125 mm |
| Depth | 130 mm |
| Weights |
| Weight, approx. | 900 g |
| last modified: | 03/13/2019 |
