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SIMATIC S7-300, CPU 315-2 DP CPU WITH INTEGRATED 24 V DC POWER SUPPLY, 64 KBYTE WORKING MEMORY 2ND INTERFACE DP-MASTER/SLAVE |
| Supply voltage |
| 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, max. |
8 W |
| Memory |
| Work memory |
| ● Integrated |
64 kbyte; 64 KB / 21K instructions RAM (integrated) |
| Load memory |
| ● expandable FEPROM |
Yes; Flash-EPROM |
| ● expandable FEPROM, max. |
4 Mbyte |
| ● integrated RAM, max. |
96 kbyte |
| Backup |
| ● with battery |
Yes; all blocks |
| ● without battery |
Yes; 4 KB: bit memory, counter, times 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. |
255 |
| ● Size, max. |
16 kbyte |
| FB |
| ● Number, max. |
192 |
| ● Size, max. |
16 kbyte |
| FC |
| ● Number, max. |
192 |
| ● Size, max. |
16 kbyte |
| OB |
| ● Description |
see instruction list |
| ● Size, max. |
16 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; for each programming level |
| 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 |
127 |
| of which retentive without battery |
| — can be set |
Yes |
| — lower limit |
0 |
| — upper limit |
127 |
| 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 2047 (M 0.0 to M 255.7, adjustable) |
| Address area |
| I/O address area |
| ● Inputs |
1 kbyte |
| ● Outputs |
1 kbyte |
| Process image |
| ● Inputs |
128 byte |
| ● Outputs |
128 byte |
| Digital channels |
| ● Inputs |
8 192 |
| ● Outputs |
8 192 |
| ● Inputs, of which central |
1 024 |
| ● Outputs, of which central |
1 024 |
| Analog channels |
| ● Inputs |
512 |
| ● Outputs |
512 |
| ● Inputs, of which central |
256 |
| ● Outputs, of which central |
128 |
| Addressing volume |
| ● Inputs |
244 byte |
| ● Outputs |
244 byte |
| Hardware configuration |
| Number of modules per DP slave interface, max. |
64 |
| Expansion devices, max. |
3 |
| Connectable programming devices/PCs |
PGs/PCs with STEP 7 connectable via MPI interface |
| Number of DP masters |
| ● Integrated |
1 |
| ● Via CP |
1; CP 342-5 |
| Number of operable FMs and CPs (recommended) |
| ● FM |
8 |
| ● CP, point-to-point |
4 |
| ● CP, LAN |
2 |
| Rack |
| ● Modules per rack, max. |
32 |
| Time of day |
| Clock |
| ● Hardware clock (real-time clock) |
Yes |
| Interfaces |
| MPI |
| ● Cable length, max. |
9 100 m; 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 |
| ● Transmission rate, max. |
187.5 kbit/s |
| Services |
| — PG/OP communication |
Yes |
| — Global data communication |
Yes |
| — S7 basic communication |
Yes |
| — S7 communication |
Yes |
| 2nd interface |
| Functionality |
| ● DP master |
Yes |
| ● DP slave |
Yes |
| DP master |
| ● Number of DP slaves, max. |
64 |
| Services |
| — Equidistance mode support |
Yes |
| — Activation/deactivation of DP slaves |
Yes |
| — Direct data exchange (slave-to-slave communication) |
Yes; Transmitter and receiver |
| User data per DP slave |
| — User data per DP slave, max. |
244 byte |
| Communication functions |
| PG/OP communication |
Yes |
| Global data communication |
| ● supported |
Yes |
| S7 basic communication |
| ● supported |
Yes |
| S7 communication |
| ● supported |
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 |
| Configuration |
| Configuration software |
| ● STEP 7 |
Yes; STEP 7 V5.0 |
| 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 organization |
Linear, structured |
| ● System functions (SFC) |
Interrupt and error processing, copy data, clock functions, diagnostic functions, module parameterization, operating mode transitions |
| Programming language |
| — LAD |
Yes |
| — FBD |
Yes |
| — STL |
Yes |
| — SCL |
Yes |
| — CFC |
Yes |
| — GRAPH |
Yes |
| — HiGraph® |
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 |
80 mm |
| Height |
125 mm |
| Depth |
130 mm |
| Weights |
| Weight, approx. |
530 g; Memory card 16 g |
| last modified: |
13.10.2014 |
