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SIMATIC S7-300, CPU 313C-2 PTP COMPACT CPU WITH MPI, 16 DI/16 DO, 3 FAST COUNTERS (30 KHZ), INTEGRATED INTERFACE RS485, INTEGRATED 24V DC POWER SUPPLY, 64 KBYTE WORKING MEMORY, FRONT CONNECTOR (1 X 40PIN) AND MICRO MEMORY CARD REQUIRED |
General information |
Hardware product version |
01 |
Firmware version |
V2.6 |
Engineering with |
● Programming package |
STEP 7 V5.3 SP2 or higher with HW update |
Supply voltage |
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) |
Miniature circuit breaker, type C; min. 2 A; miniature circuit breaker type B, min. 4 A |
Load voltage L+ |
● Rated value (DC) |
24 V |
● permissible range, lower limit (DC) |
20.4 V |
● permissible range, upper limit (DC) |
28.8 V |
Digital inputs |
Load voltage L+ |
— Rated value (DC) |
24 V |
— Reverse polarity protection |
Yes |
Digital outputs |
Load voltage L+ |
— Rated value (DC) |
24 V |
— Reverse polarity protection |
No |
Input current |
Current consumption (rated value) |
700 mA |
Current consumption (in no-load operation), typ. |
100 mA |
Inrush current, typ. |
11 A |
I²t |
0.7 A²·s |
from supply voltage L+, max. |
700 mA |
Digital inputs |
● from load voltage L+ (without load), max. |
70 mA |
Digital outputs |
● from load voltage L+, max. |
100 mA |
Power loss |
Power loss, typ. |
10 W |
Memory |
Type of memory |
other |
Work memory |
● integrated |
64 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) |
● 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. |
0.2 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); the maximum number of loadable blocks can be reduced by the MMC used. |
DB |
● Number, max. |
511; Number range: 1 to 511 |
● Size, max. |
16 kbyte |
FB |
● Number, max. |
1 024; Number range: 0 to 2047 |
● Size, max. |
16 kbyte |
FC |
● Number, max. |
1 024; Number range: 0 to 2047 |
● Size, max. |
16 kbyte |
OB |
● Size, max. |
16 kbyte |
● Number of free cycle OBs |
1; OB 1 |
● Number of time alarm OBs |
1; OB 10 |
● Number of delay alarm OBs |
1; OB 20 |
● Number of time interrupt OBs |
1; OB 35 |
● Number of process alarm OBs |
1; OB 40 |
● Number of startup OBs |
1; OB 100 |
● Number of asynchronous error OBs |
4; OB 80, 82, 85, 87 |
● Number of synchronous error OBs |
2; OB 121, 122 |
Nesting depth |
● per priority class |
8 |
● additional within an error OB |
4 |
Counters, timers and their retentivity |
S7 counter |
● Number |
256 |
of which retentive without battery |
— adjustable |
Yes |
— lower limit |
0 |
— upper limit |
255 |
— preset |
8 |
Retentivity |
— adjustable |
Yes |
— lower limit |
0 |
— upper limit |
255 |
— preset |
8 |
Counting range |
— lower limit |
0 |
— upper limit |
999 |
IEC counter |
● present |
Yes |
● Type |
SFB |
● Number |
Unlimited (limited only by RAM capacity) |
S7 times |
● Number |
256 |
of which retentive without battery |
— adjustable |
Yes |
— lower limit |
0 |
— upper limit |
255 |
Retentivity |
— adjustable |
Yes |
— lower limit |
0 |
— upper limit |
255 |
— 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, total |
all |
Flag |
● Number, max. |
256 byte |
● Retentivity available |
Yes; MB 0 to MB 255 |
● Retentivity preset |
MB 0 to MB 15 |
● Number of clock memories |
8; 1 memory byte |
Data blocks |
● Number, max. |
511; Number range: 1 to 511 |
● Size, max. |
16 kbyte |
● Retentivity adjustable |
Yes; via non-retain property on DB |
● Retentivity preset |
Yes |
Local data |
● per priority class, max. |
510 byte |
Address area |
I/O address area |
● Inputs |
1 kbyte |
● Outputs |
1 kbyte |
of which distributed |
— Inputs |
none |
— Outputs |
none |
Process image |
● Inputs |
128 byte |
● Outputs |
128 byte |
Default addresses of the integrated channels |
— Digital inputs |
124.0 to 125.7 |
— Digital outputs |
124.0 to 125.7 |
Digital channels |
● Inputs |
1 008 |
● Outputs |
1 008 |
● Inputs, of which central |
1 008 |
● Outputs, of which central |
1 008 |
Analog channels |
● Inputs |
248 |
● Outputs |
248 |
● Inputs, of which central |
248 |
● Outputs, of which central |
248 |
Hardware configuration |
Expansion devices, max. |
3 |
Number of DP masters |
● integrated |
No |
● via CP |
4 |
Number of operable FMs and CPs (recommended) |
● FM |
8 |
● CP, point-to-point |
8 |
● CP, LAN |
6 |
Rack |
● Racks, max. |
4 |
● Modules per rack, max. |
8; In rack 3 max. 7 |
Time of day |
Clock |
● Hardware clock (real-time clock) |
Yes |
● battery-backed and synchronizable |
Yes |
● Deviation per day, max. |
10 s |
● Backup time |
6 wk; At 40 °C ambient temperature |
Operating hours counter |
● Number |
1 |
● Number/Number range |
0 |
● Range of values |
0 to 2^31 hours (when using SFC 101) |
● Granularity |
1 hour |
● retentive |
Yes; Must be restarted at each restart |
Clock synchronization |
● supported |
Yes |
● to MPI, master |
Yes |
● to MPI, slave |
Yes |
● in AS, master |
Yes |
Digital inputs |
Number of digital inputs |
16 |
● of which inputs usable for technological functions |
12 |
integrated channels (DI) |
16 |
Input characteristic curve in accordance with IEC 61131, type 1 |
Yes |
Number of simultaneously controllable inputs |
horizontal installation |
— up to 40 °C, max. |
16 |
— up to 60 °C, max. |
8 |
vertical installation |
— up to 40 °C, max. |
8 |
Input voltage |
● Rated value, DC |
24 V |
● for signal "0" |
-3 to +5 V |
● for signal "1" |
15 to 30 V |
Input current |
● for signal "1", typ. |
9 mA |
Input delay (for rated value of input voltage) |
for standard inputs |
— parameterizable |
Yes; 0.1 / 0.3 / 3 / 15 ms |
— Rated value |
3 ms |
for counter/technological functions |
— at "0" to "1", max. |
16 µs |
Cable length |
● Cable length, shielded, max. |
1 000 m; 100 m for technological functions |
● Cable length unshielded, max. |
600 m; For technological functions: No |
Technological functions |
— shielded, max. |
100 m |
— unshielded, max. |
not allowed |
Standard DI |
— shielded, max. |
1 000 m |
— unshielded, max. |
600 m |
Digital outputs |
Number of digital outputs |
16 |
● of which high-speed outputs |
4 |
integrated channels (DO) |
16 |
Short-circuit protection |
Yes; Clocked electronically |
● Response threshold, typ. |
1 A |
Limitation of inductive shutdown voltage to |
L+ (-48 V) |
Controlling a digital input |
Yes |
Switching capacity of the outputs |
● Lamp load, max. |
5 W |
Load resistance range |
● lower limit |
48 Ω |
● upper limit |
4 kΩ |
Output voltage |
● for signal "1", min. |
L+ (-0.8 V) |
Output current |
● for signal "1" rated value |
500 mA |
● for signal "1" permissible range, min. |
5 mA |
● for signal "1" permissible range, max. |
0.6 A |
● for signal "1" minimum load current |
5 mA |
● for signal "0" residual current, max. |
0.5 mA |
Parallel switching of 2 outputs |
● for uprating |
No |
● for redundant control of a load |
Yes |
Switching frequency |
● with resistive load, max. |
100 Hz |
● with inductive load, max. |
0.5 Hz |
● on lamp load, max. |
100 Hz |
● of the pulse outputs, with resistive load, max. |
2.5 kHz |
Total current of the outputs (per group) |
horizontal installation |
— up to 40 °C, max. |
3 A |
— up to 60 °C, max. |
2 A |
vertical installation |
— up to 40 °C, max. |
2 A |
Cable length |
● Cable length, shielded, max. |
1 000 m |
● Cable length unshielded, max. |
600 m |
Analog inputs |
integrated channels (AI) |
none |
Analog outputs |
integrated channels (AO) |
none |
Encoder |
Connectable encoders |
● 2-wire sensor |
Yes |
— permissible quiescent current (2-wire sensor), max. |
1.5 mA |
Interfaces |
Number of USB interfaces |
0 |
Number of parallel interfaces |
0 |
Number of 20 mA interfaces (TTY) |
0 |
Number of RS 232 interfaces |
0 |
Number of RS 422 interfaces |
1; RS 422/485 combined |
Number of other interfaces |
0 |
MPI |
● Cable length, max. |
50 m; without repeater |
Point-to-point |
● Cable length, max. |
1 200 m |
Integrated protocol driver |
— 3964 (R) |
Yes |
— ASCII |
Yes |
— RK512 |
No |
Transmission rate, RS 422/485 |
— with 3964 (R) protocol, max. |
38.4 kbit/s half duplex; 19.2 kbit/s full duplex |
— with ASCII protocol, max. |
38.4 kbit/s half duplex; 19.2 kbit/s full duplex |
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 |
Functionality |
● MPI |
Yes |
● DP master |
No |
● DP slave |
No |
● Point-to-point connection |
No |
MPI |
● Number of connections |
8 |
● 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 |
— S7 communication, as server |
Yes |
2. Interface |
Interface type |
Integrated RS 422/ 485 interface |
Physics |
RS 422/RS 485 (X.27) |
isolated |
Yes |
Power supply to interface (15 to 30 V DC), max. |
No |
Number of connection resources |
none |
Functionality |
● MPI |
No |
● DP master |
No |
● DP slave |
No |
● PROFINET IO Controller |
No |
● PROFINET CBA |
No |
● Point-to-point connection |
Yes |
Point-to-point connection |
● Transmission rate, max. |
38.4 kbit/s half duplex; 19.2 kbit/s full duplex |
● Cable length, max. |
1 200 m |
● Interface from the user program controllable |
Yes |
● Interface can trigger alarm/interrupt in the user program |
Yes; Message on break - identification |
● Protocol driver |
3964 (R); ASCII |
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; Server |
● 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 |
8 |
● usable for PG communication |
7 |
— reserved for PG communication |
1 |
— adjustable for PG communication, min. |
1 |
— adjustable for PG communication, max. |
7 |
● usable for OP communication |
7 |
— reserved for OP communication |
1 |
— adjustable for OP communication, min. |
1 |
— adjustable for OP communication, max. |
7 |
● usable for S7 basic communication |
4 |
— reserved for S7 basic communication |
0 |
— adjustable for S7 basic communication, min. |
0 |
— adjustable for S7 basic communication, max. |
4 |
● usable for routing |
No |
S7 message functions |
Number of login stations for message functions, max. |
8; Depending on the configured connections for PG/OP and S7 basic communication |
Process diagnostic messages |
Yes |
simultaneously active Alarm-S blocks, max. |
20 |
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 |
Interrupts/diagnostics/status information |
Diagnostics indication LED |
● Status indicator digital output (green) |
Yes |
● Status indicator digital input (green) |
Yes |
Integrated Functions |
Number of counters |
3; 3 channels (see "Technological Functions" manual) |
Counting frequency (counter) max. |
30 kHz |
Frequency measurement |
Yes |
Number of frequency meters |
3; 3 channels up to max. 30 kHz (see "Technological Functions" manual) |
controlled positioning |
No |
integrated function blocks (closed-loop control) |
PID controller (see "Technological Functions" manual) |
PID controller |
Yes |
Number of pulse outputs |
3; 3 channels pulse width modulation up to max. 2.5 kHz (see "Technological Functions" manual) |
Limit frequency (pulse) |
2.5 kHz |
Galvanic isolation |
Galvanic isolation digital inputs |
● Galvanic isolation digital inputs |
Yes |
● between the channels |
No |
● between the channels and the backplane bus |
Yes |
Galvanic isolation digital outputs |
● Galvanic isolation digital outputs |
Yes |
● between the channels |
Yes |
● between the channels, in groups of |
8 |
● between the channels and the backplane bus |
Yes |
Permissible potential difference |
between different circuits |
75 VDC / 60 VAC |
Isolation |
Isolation tested with |
600 V DC |
Configuration |
Configuration software |
● STEP 7 |
Yes; V5.2 SP1 with HW update |
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 |
— 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. |
566 g |
last modified: |
31.07.2014 |