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SIMATIC S7-300, CPU 314 CPU WITH MPI INTERFACE INTEGRATED 24 V DC POWER SUPPLY 48 KBYTE WORKING MEMORY MICRO MEMORY CARD NECESSARY |
General information |
HW functional status |
01 |
Firmware version |
V2.0.0 |
Engineering with |
● Programming package |
STEP 7 V5.1 SP4 or higher |
Supply voltage |
Rated value (DC) |
|
● 24 V DC |
Yes |
permissible range, lower limit (DC) |
20.4 V |
permissible range, upper limit (DC) |
28.8 V |
external protection for power supply lines (recommendation) |
2 A min. |
Input current |
Current consumption (rated value) |
600 mA |
Current consumption (in no-load operation), typ. |
60 mA |
Inrush current, typ. |
2.5 A |
I²t |
0.5 A²·s |
Power loss |
Power loss, typ. |
2.5 W |
Memory |
Work memory |
● integrated |
48 kbyte |
● expandable |
No |
Load memory |
● Plug-in (MMC) |
Yes |
● Plug-in (MMC), max. |
8 Mbyte |
● Data management on MMC (after last programming), min. |
10 y |
Backup |
● present |
Yes; Guaranteed by MMC (maintenance-free) |
Battery |
Backup battery |
● Backup time, max. |
1 008 h; At 40 °C ambient temperature |
CPU processing times |
for bit operations, typ. |
0.1 µs |
for bit operations, max. |
0.2 µs |
for word operations, typ. |
0.2 µs |
for fixed point arithmetic, typ. |
2 µs |
for floating point arithmetic, typ. |
3 µs |
CPU-blocks |
Number of blocks (total) |
1 024; (DBs, FCs, FBs OBs, SDBs); the maximum number of loadable blocks can be reduced by the MMC being used. |
DB |
● Number, max. |
511; DB 0 reserved |
● Size, max. |
16 kbyte |
FB |
● Number, max. |
512; From FB 0 to FB 511 |
● Size, max. |
16 kbyte |
FC |
● Number, max. |
512; from FC 0 to FC 511 |
● Size, max. |
16 kbyte |
OB |
● Number, max. |
see instruction list |
● Size, max. |
16 kbyte |
Nesting depth |
● per priority class |
8 |
● additional within an error OB |
4 |
Counters, timers and their retentivity |
S7 counter |
● Number |
256 |
Retentivity |
— adjustable |
Yes |
— preset |
Z 0 to Z 7 |
Counting range |
— adjustable |
Yes |
— lower limit |
0 |
— upper limit |
999 |
IEC counter |
● present |
Yes |
● Type |
SFB |
● Number |
Unlimited (limited only by RAM capacity) |
S7 times |
● Number |
256 |
Retentivity |
— adjustable |
Yes |
— preset |
No retentivity |
Time range |
— lower limit |
10 ms |
— upper limit |
9 990 s |
IEC timer |
● present |
Yes |
● Type |
SFB |
● Number |
Unlimited (limited only by RAM capacity) |
Data areas and their retentivity |
retentive data area in total |
all (incl. memory bits, times, counters) |
Flag |
● Number, max. |
256 byte |
● Retentivity preset |
MB 0 to MB 15 |
● Number of clock memories |
8; 1 memory byte |
Address area |
I/O address area |
● Inputs |
1 kbyte |
● Outputs |
1 kbyte |
Process image |
● Inputs |
128 byte |
● Outputs |
128 byte |
Digital channels |
● Inputs |
1 024 |
— of which central |
1 024 |
● Outputs |
1 024 |
— of which central |
1 024 |
Analog channels |
● Inputs |
256 |
— of which central |
256 |
● Outputs |
256 |
— of which central |
256 |
Hardware configuration |
Number of DP masters |
● integrated |
0 |
● via CP |
4 |
Number of operable FMs and CPs (recommended) |
● FM |
8 |
● CP, PtP |
8 |
● CP, LAN |
10 |
Rack |
● Racks, max. |
4 |
● Modules per rack, max. |
8 |
Time of day |
Clock |
● Hardware clock (real-time) |
Yes |
● retentive and synchronizable |
Yes |
● Backup time |
6 wk; At 40 °C ambient temperature |
● Deviation per day, max. |
10 s |
Operating hours counter |
● Number |
1 |
● Number/Number range |
0 |
● Range of values |
0 to 2^31 hours (when using SFC 101) |
● Granularity |
1 h |
● retentive |
Yes; Must be restarted at each restart |
Clock synchronization |
● supported |
Yes |
● to MPI, master |
Yes |
● to MPI, slave |
Yes |
● in AS, master |
Yes |
Analog inputs |
integrated channels (AI) |
0 |
Analog outputs |
integrated channels (AO) |
0 |
1. Interface |
Interface type |
Integrated RS 485 interface |
Physics |
RS 485 |
Isolated |
No |
Power supply to interface (15 to 30 V DC), max. |
200 mA |
Protocols |
● MPI |
Yes |
● PROFIBUS DP master |
No |
● PROFIBUS DP slave |
No |
● Point-to-point connection |
No |
MPI |
● Number of connections |
12 |
● Transmission rate, max. |
187.5 kbit/s |
Services |
— PG/OP communication |
Yes |
— Routing |
No |
— Global data communication |
Yes |
— S7 basic communication |
Yes |
— S7 communication |
Yes |
— S7 communication, as client |
No; but via CP and loadable FB |
— S7 communication, as server |
Yes |
Communication functions |
PG/OP communication |
Yes |
Global data communication |
● supported |
Yes |
● Number of GD loops, max. |
4 |
● Number of GD packets, max. |
4 |
● Number of GD packets, transmitter, max. |
4 |
● Number of GD packets, receiver, max. |
4 |
● Size of GD packets, max. |
22 byte |
● Size of GD packet (of which consistent), max. |
22 byte |
S7 basic communication |
● supported |
Yes |
● User data per job, max. |
76 byte |
● User data per job (of which consistent), max. |
76 byte; 76 bytes (with X_SEND or X_RCV); 64 bytes (with X_PUT or X_GET as server) |
S7 communication |
● supported |
Yes |
● as server |
Yes |
● as client |
Yes; Via CP and loadable FB |
● User data per job, max. |
180 byte; With PUT/GET |
● User data per job (of which consistent), max. |
64 byte |
S5 compatible communication |
● supported |
Yes; via CP and loadable FC |
Number of connections |
● overall |
12 |
● usable for PG communication |
11 |
— reserved for PG communication |
1 |
— adjustable for PG communication, min. |
1 |
— adjustable for PG communication, max. |
11 |
● usable for OP communication |
11 |
— reserved for OP communication |
1 |
— adjustable for OP communication, min. |
1 |
— adjustable for OP communication, max. |
11 |
● usable for S7 basic communication |
8 |
— reserved for S7 basic communication |
8 |
— adjustable for S7 basic communication, min. |
0 |
— adjustable for S7 basic communication, max. |
8 |
S7 message functions |
Number of login stations for message functions, max. |
12; Depending on the configured connections for PG/OP and S7 basic communication |
Process diagnostic messages |
Yes |
simultaneously active Alarm-S blocks, max. |
40 |
Test commissioning functions |
Status block |
Yes |
Single step |
Yes |
Number of breakpoints |
2 |
Status/control |
● Status/control variable |
Yes |
● Variables |
Inputs, outputs, memory bits, DB, times, counters |
● Number of variables, max. |
30 |
— of which status variables, max. |
30 |
— of which control variables, max. |
14 |
Forcing |
● Forcing |
Yes |
● Forcing, variables |
Inputs, outputs |
● Number of variables, max. |
10 |
Diagnostic buffer |
● present |
Yes |
● Number of entries, max. |
100 |
— adjustable |
No |
Configuration |
Configuration software |
● STEP 7 |
Yes; V5.1 SP4 and higher |
Programming |
● Command set |
see instruction list |
● Nesting levels |
8 |
● System functions (SFC) |
see instruction list |
● System function blocks (SFB) |
see instruction list |
Programming language |
— LAD |
Yes |
— FBD |
Yes |
— STL |
Yes |
— SCL |
Yes |
— CFC |
Yes |
— GRAPH |
Yes |
— HiGraph® |
Yes |
Know-how protection |
● User program protection/password protection |
Yes |
Dimensions |
Width |
40 mm |
Height |
125 mm |
Depth |
130 mm |
Weights |
Weight, approx. |
280 g |
last modified: |
04/07/2020 |
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