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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 |
| Rated value at 24 V DC |
1 000 mA |
| Inrush current, max. |
8 A |
| Power losses |
| 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 time 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 |
| of which retentive with battery |
| — can be set |
Yes |
| — lower limit |
0 |
| — upper limit |
63 |
| of which retentive without battery |
| — can be set |
Yes |
| — lower limit |
0 |
| — upper limit |
63 |
| Counting range |
| — lower limit |
1 |
| — upper limit |
999 |
| S7 times |
| ● Number |
128 |
| of which retentive with battery |
| — can be set |
Yes |
| — lower limit |
0 |
| — upper limit |
71 |
| of which retentive without battery |
| — can be set |
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 2047 (M 0.0 to M 255.7, adjustable) |
| ● of which retentive without battery |
0 to 1152 (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 modules per DP slave interface, max. |
16 |
| Expansion devices, max. |
3 |
| Connectable programming devices/PCs |
PGs/PCs with STEP 7 connectable via MPI interface |
| Number of DP masters |
| ● Via CP |
1; CP 342-5 |
| Number of operable FMs and CPs (recommended) |
| ● FM |
4 |
| ● CP, point-to-point |
2 |
| ● CP, LAN |
1 |
| Rack |
| ● Modules per rack, max. |
31 |
| Time of day |
| Clock |
| ● Hardware clock (real-time clock) |
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 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. |
1 000 m; 100 m for alarm and counter inputs |
| ● Cable length 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 40 °C, max. |
500 mA |
| ● for signal "1" permissible range for 40 to 60 °C, max. |
500 mA |
| ● 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 |
| Aggregate current of outputs (per group) |
| all mounting positions |
| — up to 40 °C, max. |
4 A |
| — up to 60 °C, max. |
2 A |
| Cable length |
| ● Cable length, shielded, max. |
1 000 m |
| ● Cable length unshielded, max. |
600 m |
| Analog inputs |
| Number of analog inputs |
4 |
| Input ranges |
| ● Voltage |
Yes |
| ● Current |
Yes |
| Input ranges (rated values), currents |
| ● -20 to +20 mA |
Yes |
| ● Input resistance (-20 to +20 mA) |
105.5 kΩ |
| Analog outputs |
| Number of analog outputs |
1 |
| Output ranges, voltage |
| ● -10 to +10 V |
Yes |
| Output ranges, current |
| ● -20 to +20 mA |
Yes |
| Analog value creation |
| Integration and conversion time/resolution per channel |
| ● Resolution with overrange (bit including sign), max. |
12 bit |
| ● Conversion time (per channel) |
100 µs; for each output 400 µs, analog outputs 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 area, (+/-) |
0.9 % |
| ● Current, relative to input area, (+/-) |
0.9 % |
| ● Voltage, relative to output area, (+/-) |
0.9 % |
| ● Current, relative to output area, (+/-) |
0.9 % |
| Interfaces |
| PROFIBUS DP |
| ● Number of stations per segment, max. |
16 |
| 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) |
| 1st interface |
| Functionality |
| ● 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) |
| Counter 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 |
| Galvanic isolation |
| Galvanic isolation digital inputs |
| ● between the channels, in groups of |
16; Special inputs in groups of 4, inputs in groups of 16 |
| ● between the channels and the backplane bus |
Yes |
| Galvanic isolation digital outputs |
| ● between the channels, in groups of |
8 |
| ● between the channels and the backplane bus |
Yes |
| Galvanic isolation analog inputs |
| ● between the channels, in groups of |
4 |
| ● between the channels and the backplane bus |
Yes |
| Galvanic isolation analog outputs |
| ● between the channels, in groups of |
1 |
| ● between the channels and the backplane bus |
Yes |
| Ambient conditions |
| Operating temperature |
| ● 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 |
| ● can be set |
Yes |
| ● preset |
150 ms |
| Dimensions |
| Width |
160 mm |
| Height |
125 mm |
| Depth |
130 mm |
| Weights |
| Weight, approx. |
900 g |
| last modified: |
13.10.2014 |
