S7_300Compact

SIMATIC S7-300 compact CPUs

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Totally Integrated Automation

SIMATIC S7-300 Compact The powerful compact mini PLC

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Overview

CPU 312CCPU 313CCPU 313C-2 PtPCPU 313C-2 DP

CPU 314C-2 DP


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Highlights

Smaller dimensions (installation width)

Integral functions Counting/measuring

PID control, positioning

Integral I/O Digital

Analog

Shorter instruction execution times

Integral communications interfaces Low-cost PROFIBUS-DP master

Intelligent slave for distributed pre-processing


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The new S7-300 compact CPUs A strong team

3 basic types: With different memory sizes and performances

312C: 16 Kbyte

313C: 32 Kbyte

314C: 48 Kbyte

The versions differ with respect to I/Os

Onboard interfaces

Process functions

312C

313C

313C-2 DP313C-2 PtP

314C-2 DP314C-2 PtP


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Dimensions and design

312C

80 mm

313C

120 mm

313C-2 PtP313C-2 DP

120 mm 120 mm

314C-2 PtP314C-2 DP

Max. design:

Onboard I/Os:

Integral interfaces:

125 mm

DI/DO DI/DO + AI/AO DI/DO DI/DO + AI/AO

MPI MPI MPI + PtP/DP MPI + PtP/DP

1 tier 4 tiers 4 tiers 4 tiers


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Product range

Work memoryin KB

Integral I/O

Integral technologyfunctions

Interfaces except MPI

Design

CPU 313C

32

Digital,analog

Counting,PID control

---

4-tier

CPU 312C

16

Digital

Counting

---

1-tier

CPU 313C-2PtP

32

Digital


PtP

4-tier

CPU 313C-2DP

32

Digital


DP

4-tier

CPU 314C-2DP

48

Digital,analog

Counting,PID control,position.DP

4-tier


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Memory & performance

Main memory

Statements

Loading memory

Instruction runtime

Alarm response time

Bit memories

Timers / counters

Address space I/O

No. of digital channels

No. analog chann. I/O

312C

16 KB

5 k

Plug-in 64k-4MB

Min. 0.2 µs

800 µs

1024

128 / 128

1024 / 1024 byte

266

64 / 32

313C 314C

32 KB

10 k

Plug-in 64k-4MB

Min. 0.1 µs

400 µs

2048

256 / 256

1024 / 1024 byte

1000

248 / 124

48 KB

16 k

Plug-in 64k-4MB

Min. 0.1 µs

400 µs

2048

256 / 256

1024 / 1024 byte

1000

248 / 124


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Integral I/Os - summary

Low-cost onboard I/O channels for universal use

Every digital input can be used as an alarm input

Analog inputs can also be used as digital inputs

Number of DIs

Number of DOs

Number of AIs

Number of AOs

312C

10

6

-/-

-/-

314C313C 313C-2 PtP / DP

24 16

16 16

4+1* -/-

2 -/-

313C314C-2 PtP / DP

24

16

4+1*

2

* Additional input for resistance measurement


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Integral digital I/Os

Rated voltage

Permissible range

Current range

Input delay

Switch-off delay

Electrical isolation from backplane bus

Groups of

Max. frequency

Digitalinputs

DC 24 V

DC 20.4 - 28.8 V

---

0.1/0.5/3/15 ms

---

Yes

16

---

Digitaloutputs

DC 24 V

DC 20.4 - 28.8 V

0.5 A

---

2 ms

Yes

8

100 Hz


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Integral analog I/Os

Measuring ranges

Voltage

Current

Resolution

Filter (50/60 Hz)

Input delay

Output delay

Electrical isolation from backplane bus

Analoginputs

±10 V; 0 - 10 V

±20 mA; 0/4-20 mA

11 bits + sign

Selectable

5 ms

---

Yes

Analogoutputs

±10 V; 0 - 10 V

±20 mA; 0/4-20 mA

11 bits + sign

---

---

1.2 ms

Yes


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Summary of Technology functions

Counting

Connectable sources

Number of channels

Cut-off frequency

Frequency measurem.

PWM

Number of outputs

Cut-off frequency

Positioning

Control

312C

Incremental encoder, pulse generator with direction signal

2

10 kHz

Yes

2

2.5 kHz

No

-

313C 314C


3

30 kHz

Yes

3

2.5 kHz

No

PID


4

60 kHz

Yes

4

2.5 kHz

1 axis

PID


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Integral counters

Integral counters in all compact CPUs Recording of pulse and incremental encoder

signals (DC 24V)

Forward/reverse with reference values whichcan be changed during operation

10 - 60 kHz (depending on CPU)

Various operating modes possible Single counting (e.g. filling, dosing)

Periodic counting (e.g. recording of angle)

Counting with gate control (e.g. length measurement)

Frequency measurement Counting with fixed time base

t


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PWM outputs

U

t

Pulse outputs on all compact CPUs Direct control of valves, actuators, switchgear,

heaters etc. (DC 24 V/ 0.5 A)

Period and pulse/pause ratio can be changed during operation

2.5 kHz switching frequency, up to 4 outputs (depending on CPU)


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Simple motion controlwithout additional components

Low-price Since no additional modules required

Optimum memory requirements and runtime No additional programming requirements since function is

component of operating system

Flexible Parameters (delay, acceleration etc.) can be changed for each

travel

Various operating modes selectable: absolute or relative positioning, inching etc.

Simple Prepared functionality can be linked into application program

using standard blocks

v

t


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Summary of communications

312C313C

313C-2 PtP314C-2 DP313C-2 DP

MPI

Point-to-point

PROFIBUS-DPFast, cyclic data exchange

High data security

Interface present on all CPUs - networking of CPU, programming device and OPs

Low-cost communications without additional HW - extremely simple configuring

Communication with up to 7 OPs simultaneously (depending on type of CPU)

Serial onboard interface

Data exchange e.g. with devices from other vendors


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On every CPU:multipoint interface MPI

Data exchange: 187.5 kbit/s Up to 32 bus stations,

up to 12 active connections per CPU Communications functions:

Programming device/operator panel functions Global data communications

without programming input S7 basic communication up to 76 byte S7 communication (only server)

Low-cost communication without additional hardware


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Point-to-point interface (RS422/485)Connection of non-system components

CPU 313C-2 PtP Transmission physics:

RS 422/485 (X.27) Transmission rate: up to 19.2 / 38.4 kbit/s

(half duplex/full duplex)

Protocols:

ASCII

3964(R)

PCs, computers,programming devices

SIMATIC S5

Robotcontrols

Scanners,bar code readers,ID systems

Weighing systems,controllers

Opto electronicsS7-300 S7-300 C


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CPU 313C-2 DP, 314C-2 DP, integral PROFIBUS-DP

Versatile use:master or slave function

Data exchange at 12 Mbit/s

Up to 32 DP stationsto master interface

Max. distance 23 km using FO

Communications functions:

All programming device/OP functions PROFIBUS-DP

PG

No additional module or software required!

PROCES S FIELD BUS

SIEMENS


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New memory functions

All compact CPUs with MMC slot

Simple program update via micro memory card (MMC)

Project storage (symbols, comments) on the CPU

Access to MMC in RUN Archive measured values ( SFC 41 / SFC 42 )

Recipes

Backup of program and data without battery


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Programming

Programming with STEP 7 Lite the new programming package for basic functions in simple stand-alone applications

Features of STEP 7-Lite Intuitive operation means it can be learned quickly

Simpler project handling (project = CPU)

Migration, that is, data transfer to STEP 7 possible

Programming with STEP 7 the familiar tool for all functions and all applications


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Compatibility

Compatibility within S7-300 Expansion using any modules

(SMs, FMs, CPs)

Support for module replacement in STEP 7’s hardware configuration

Programs of previous CPUs will run on compact CPUs

Compatibility with STEP 7 Programming from Version 5.1, SP 2

Portability to S5 Porting of existing programs from S5

to S7 (Converter)


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Customer benefits (1)

Space savings Compact design

Many additional modules become superfluous

Competitive advantage Shorter instruction execution times

reduce machine cycle times


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Customer benefits (2)

Reduction in acquisition costs Integral functions (I/O, interfaces, technology functions)

make many modules superfluous

Reduction in operating costs Service made simpler thanks to project storage on the CPU

No maintenance costs since there is no battery


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The universal mini PLC for system solutions focussing on the manufacturing industry

Totally IntegratedAutomation

withSIMATICS7-300

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Documents

S7_300Compact