Simatic s7 300 description. SIMATIC S7 programmable logic controllers

Modular design
Free cooling operation
Ability to use local and distributed I/O structures
Wide communication possibilities
Large selection of features at the operating system level
Minimum operating and maintenance costs

What provides:

Effective use of controllers
Obtaining cost-effective solutions for building automation systems in various industries

Assignment of SIMATIC S7-300 controllers

The S7-300 is a versatile modular programmable controller for low to medium complexity automatic control tasks. Efficient use of controllers is facilitated by the presence of a wide range of central processors, input-output modules for discrete and analog signals, functional and communication modules, power supply modules and interface modules.

Areas of application for controllers:

automation of special purpose machines
automation of textile and packaging machines
automation of machine-building equipment
automation of equipment for the production of technical controls and electrical equipment;
construction of automatic control systems and positioning
automated measuring installations
in the automotive industry, mechanical engineering and machine tool building
for conveyor control
in the manufacturing industry
in passenger transport management systems
in logistics systems

Construction of SIMATIC S7-300 controllers

The S7-300 controllers have a modular design and allow the use of the following devices:

Central processing unit (CPU)

execution of user programs and control of all controller nodes.

Power Supply Module (PS)

provides power to the controller from a 120/230 V AC mains or from a 24/48/60/110 V DC source.

Signal modules (SM)

provide input-output of discrete and analog signals with different electrical and timing parameters.

Communication Processors (CP)

connecting the controller to PROFIBUS, PROFINET, Industrial Ethernet, AS-Interface networks, organizing communication via the Internet or PtP (point to point) interface.

Function modules (FM)

are able to independently solve the problems of automatic regulation, positioning, weighing, high-speed signal processing, etc., are equipped with a built-in microprocessor and are able to perform the functions assigned to them even if the central processor of the programmable controller stops.

Interface modules (IM)

provide the ability to connect one or more I/O expansion racks to the base unit (rack with CPU).

Special purpose modules

this simulation module SM 374 to generate input and display output discrete signals at the stage of debugging application programs and to check the performance of the controller during operation. AND false module DM 370 to reserve space for a signal module with yet to be defined parameters.

The S7-300 controllers allow the use of up to 32 signal and functional modules, as well as communication processors, distributed over 4 mounting racks. All modules operate with natural cooling. Programmable controllers do not support hot-swap modules.

Data input-output system

The I/O system of the S7-300 programmable controller can include two parts: local and distributed I/O system. The local I/O system is formed by modules installed directly into the controller racks. The distributed I/O system includes distributed I/O stations and field-level devices connected to the controller via PROFINET IO, PROFIBUS DP and AS-Interface networks.

Local I/O system

Depending on the type CPU the system can include up to 8 or up to 32 signal, function and communication modules
All modules are installed in the controller mounting racks, the functions of which are performed by S7-300 profile rails
The system can include one base unit with a CPU and up to three expansion racks that can accommodate up to 8 modules
Interface modules provide connection between racks
Distance between racks can be up to 10 m (using interface modules IM 360 and IM 361)

Distributed I/O system

Communication processors (CP) for connection to PROFIBUS, PROFINET/Industrial Ethernet and AS-Interface networks, as well as to the Internet and for organizing serial communication channels RS 232, TTY, RS 422/RS 485 via PtP interface
MPI interface built into each central processing unit for communication with programmers, personal and industrial computers, human-machine interface devices and other systems
Optional PtP, PROFIBUS DP or Industrial Ethernet interfaces built into the CPU

General specifications

The table below shows the comparative technical data of programmable controllers in general industrial and SIPLUS S7-300 in protected version.

General technical data for S7-300 controllers

Characteristic		SIPLUS S7-300
Case protection degree		IP 20 according to IEC 60 529
External conditions
Operating temperatures for horizontal installation	0 ... 60°C	0 ... 60°C , -25 ... +60°C or -25 ... +70°C
Operating temperatures for vertical installation	0 ... 40°C	-25 ... 40°C
Storage and transport temperatures	-40 ... +70°C	-40 ... +70°C
Relative Humidity	5 ... 95%	5 ... 95%
The appearance of condensate	Not allowed, RH difficulty level 2 according to IEC 1131-2	Permissible, RH level 2 according to IEC 1131-2 and IEC 721 3-3, class 3K5
PCB icing	Not allowed	Permissible, -25 … 0°C, IEC 721 3-3, class 3K5
Atmosphere pressure	795 ... 1080 GPa	795 ... 1080 GPa
Pollution concentration	--	According to IEC 721 3-3, class 3K3. SO2: more than 0.5‰, relative humidity 60%; test: 10‰ for 4 days. H2S: up to 0.1‰, relative humidity 60%; test 10‰ for 4 days.
Insulation
In circuits = 24 V		Test voltage =500 V
In circuits ~220 V		Test voltage ~1460 V
Electromagnetic compatibility
Noise resistance	According to IEC 61000-6-2, tested according to IEC 61000-4-2 … IEC 61000-4-6
Leads	According to EN 50081-2, tested according to EN 55011, class A, group 1
Mechanical impact
Vibration	IEC 68 part 2-6: 10 ... 58 Hz / constant amplitude 0.075 mm; 58…150 Hz / constant acceleration 1g. Vibration duration: 10 cycles on each of the mutually perpendicular axes.	IEC 68 part 2-6 (sinusoidal) and IEC 721 3-3 class 3M4. Frequency cycles with a rate of change of 1 octave / minute: 2 ... 9 Hz, constant amplitude 3.5 mm; 10 ... 150 Hz, constant acceleration 1g; change period: 10 frequency cycles for each of 3 mutually perpendicular axes.
Impact loads	IEC 68 Part 2-27: 15 g (peak) half-sine shocks up to 11 ms duration

The article deals with programmable controllers of the SIMATIC S7-300, SIMATIC S7-400 families and SIMATIC WinAC computer control systems. Detailed technical and operational characteristics are given.

LLC "Siemens", Moscow

The Automation Systems Division of the SIEMENS Industrial Automation Division (SIEMENS IA AS) is one of the world's largest manufacturers of control technology. Its products are widely known worldwide under the trade mark SIMATIC.

SIMATIC today is a powerful complex of software and hardware controls that combines: industrial software SIMATIC Industrial Software; programmable controllers of SIMATIC S7 families; SIMATIC PC industrial computers and SIMATIC PG programmers; SIMATIC WinAC computer control systems; stations of distributed I/O systems SIMATIC DP; hardware and software for SIMATIC HMI human-machine interface systems; equipment and software for the organization of industrial communication SIMATIC NET; control systems for continuous processes SIMATIC PCS7; SIMATIC IT production management systems.

Today, SIEMENS is the world's largest manufacturer of universal programmable controllers, and its modern products are programmable controllers of the SIMATIC S7-200, SIMATIC S7-300, SIMATIC S7-400 families. In this article, the S7-300 and S7-400 series will be discussed in detail. All of these controllers have powerful communication capabilities and are capable of communicating over the Internet, Industrial Ethernet, PROFIBUS and MPI.

SIMATIC S7-300

SIMATIC S7-300 is a modular programmable controller designed for building control systems of medium complexity. Depending on the type of CPU used, S7-300 based systems are capable of serving from 16 discrete I/Os to 65,536 discrete or 4096 analog I/O channels. The presence of a wide range of central processors, interface, communication, signal and functional modules allows you to easily adapt the controller equipment to the requirements of the tasks being solved.

The S7-300 I/O system can consist of two parts: a local I/O system and a distributed I/O system. The local I/O system combines all modules installed in the base unit and controller expansion racks. The distributed I/O system is based on remote I/O stations and field level devices connected to a programmable controller via PROFINET, PROFIBUS and AS-Interface networks.

The S7-300 can use 16 types of CPUs. All central processors are equipped with a built-in MPI interface, which is used for programming the controller and its maintenance, as well as building the simplest network structures with cyclic global data exchange. Global data exchange is supported at the configuration level and does not require controller programming. MPI allows you to combine up to 32 stations. The data transfer rate in the network can reach 187.5 Kbps.

The CPUs 31x-2DP have an integrated PROFIBUS DP interface and can act as a network master or slave. The data transfer rate can reach 12 Mbps. The maximum number of connected distributed I/O stations is determined by the type of CPU.

The CPUs 31x-2PN/DP are equipped with an integrated PROFINET interface and a combined MPI/DP interface. These CPUs are capable of operating simultaneously in Industrial Ethernet based distributed I/O (PROFINET IO) systems with a transfer rate of 10 or 100 Mbps, as well as in PROFIBUS DP based distributed I/O systems and provide data exchange between these networks . S7-300 controllers with other CPUs can be connected to the PROFINET network via the CP 343-1 communication processor with operating system V2.0 and higher.

Rice. SIMATIC S7-300 modular programmable controller family

The CPU 31xC central processing units are equipped not only with communication interfaces, but also with a set of built-in inputs and outputs. Similar to the S7-200, the built-in inputs of the CPU 31xC are universal. Such central processing units can be used as ready-made control units without or with the use of additional expansion modules. CPU 31xC provide support for a wide range of technological functions at the level of their operating system. In general, these functions include high-speed counting, frequency or period measurement, PID control, and positioning.

All CPUs use an MMC micro memory card (3.3V NVFlash) as boot memory. This card stores the controller program, hardware configuration settings, and other data. Optionally, MMC can be used to save a project archive and data logging. In the event of a controller power failure, this card maintains a maintenance-free backup of all current data.

The group of signal modules includes modules for input/output of discrete and analog signals. In addition to the simplest I/O modules, this group includes modules with an extended set of diagnostic functions that can generate emergency messages about failures in the operation of internal electronics, short circuits or open circuits in external circuits. A range of analog signal input modules are highly versatile and can be used to operate at various measurement ranges. For example, in the 6ES7 331-1KF01-0AB0 module, each of the 8 channels is configured independently of the others and can be used to measure unified current or voltage, resistance or temperature signals (with thermocouples or resistance thermometers).

The S7-300 functional modules are intelligent input/output modules equipped with a built-in microprocessor and focused on solving typical automation tasks: high-speed counting, positioning, PID control, high-speed logic signal processing, etc. The use of functional modules allows you to unload the central processor of the controller from performing resource-intensive tasks. Moreover, a number of functional modules can perform the functions assigned to them even if the central processor of the programmable controller is stopped.

The set of communication processors S7-300 allows the controller to be connected to Industrial Ethernet, PROFINET, PROFIBUS, AS-Interface networks, to support data exchange via the Internet, to communicate via serial interfaces RS-232, RS-422/RS-485 or TTY (20 mA ).

All modules are mounted on the S7-300 profile rail. Connection to the internal bus of the controller is carried out using special connectors included in the delivery of each module. External circuits are connected via removable front connectors closed with plastic doors. The presence of front connectors simplifies installation work and allows you to replace modules without dismantling them from external circuits. The first installation of the front connector on the module is automatically accompanied by the operation of its mechanical coding. In the future, this front connector can only be installed on a module of the same type.

The settings of the functional and communication modules are stored in the memory of the central processor. This allows you to replace smart modules without reconfiguring the system.

SIMATIC S7-400

SIMATIC S7-400 are the most powerful programmable controllers in the SIMATIC family. They are designed to solve complex problems of automatic control, have high performance, support multiprocessor configurations and are able to serve up to 131072 discrete or up to 8192 analog I/O channels.

The high performance of the controller is provided not only by the high computing power of the central processors, but also by the support of parallel access to program memory and data memory.

The S7-400 has a modular design and allows the use of power supply modules, central processor modules, signal, functional, communication and interface modules. Hot-swappable functions are supported for all modules of local and distributed I/O systems. If necessary, the controller can be equipped with redundant power supplies.

Everything said about the signal, functional and communication modules of the S7-300 controller fully applies to the modules of the S7-400 controller.

The controller can be equipped with 7 types of central processors. If necessary, up to 4 CPUs can be installed in one S7-400 controller. All CPUs have an integrated MPI/DP combo interface, most CPUs have additional PROFIBUS DP interfaces. A distinctive feature of the built-in MPI interfaces is support for data transfer rates of 12 Mbps.

The S7-400 has exceptionally powerful communication capabilities. Many engineering solutions take into account this feature of the S7-400 and are based on the use of only distributed I/O systems of this controller. The S7-400 fits perfectly into these configurations. For example, the S7-400, which includes a power supply module, a CPU 417-4 and a CP 443-1 communication processor, Advanced provides connectivity to 4 PROFIBUS DP networks and 4 Industrial Ethernet or PROFINET networks.

A significant advantage of the S7-400 programmable controllers is the support of CiR technology and clock synchronization in PROFIBUS and PROFINET networks.

CiR (Configuration in RUN) technology allows you to make changes to the configuration of the control system without stopping it and without stopping the corresponding production or technological process. CiR allows you to:

Add new or remove existing distributed I/O stations and field devices that act as PROFIBUS DP/PA slaves;

Add new or remove existing SIMATIC ET 200M distributed I/O station modules;

Perform reconfiguration of SIMATIC ET 200M station modules (for example, in case of replacing some sensors with others);

Cancel entered configurations.

Support for clock synchronization mode allows you to synchronize many cycles in a distributed I / O system: controller program execution cycles, communication cycles via PROFIBUS DP, service cycles for inputs and outputs of distributed I / O stations, etc. The errors caused by the time mismatch of the read information disappear, the accuracy of the work of distributed measuring systems, positioning systems and automatic control is significantly increased.

SIMATIC S7-400H programmable controllers can be used to build control systems with increased requirements for the reliability of their operation. The S7-400H consists of two identical subsystems operating on a master-slave basis. Each subsystem necessarily includes one or two power supplies and a central processor. If necessary, these subsystems can be supplemented with other modules. The central processors of the two subsystems are interconnected by two synchronization channels based on optical cables.

When using standard options for building an I / O system, all redundancy functions are taken over by the operating system of the S7-400H central processors. This allows you to develop a controller program without taking into account the presence of two central processors in the system, the presence of redundant I/O channels and redundant communication channels. A program written for a standard S7-400 controller can be loaded into an S7-400H and used to service a redundant system. Under the most unfavorable set of circumstances, the shockless switching on of the reserve in the S7-400H occurs in no more than 100 ms.

Only CPU types CPU 414-4H and CPU 417-4H can be used to build the S7-400H. According to their technical characteristics, these central processing units are closest to the CPU 414-3 and CPU 417-4, respectively. The difference lies in the composition of the interfaces used and the operating system. Each H-CPU is equipped with one MPI/DP combo interface, one PROFIBUS DP interface and two sockets for the installation of synchronization modules.

S7-400H programmable controllers provide extended support for CiR technology, allowing you to change some of the settings of the central processors, as well as the composition of the I / O modules in the controller mounting racks.

The STEP 7 package is used for programming, configuring equipment and industrial communication systems, setting parameters and diagnosing SIMATIC S7-300/-400 programmable controllers. In addition, design tools that include high-level programming languages can be used to program these types of controllers. S7-SCL, S7-GRAPH, S7-HiGraph, CFC, etc.

Rice. SIMATIC S7-400 modular programmable controller family

SIMATIC WinAC

SIMATIC WinAC is a set of tools for implementing complete PC-based industrial automation solutions. This complex includes components for creating applications of "soft" and "hard" real-time modes, software visualization tools, interfaces for data exchange with standard software products, components for connecting to information networks, development tools, etc. Such a variety of possibilities guarantees each user the minimization of system integration costs.

The hardware platform can be any standard PC or an industrial PC. The combination of the SIMATIC WinAC software product with the SIMATIC PC PC is a complete turnkey solution, the implementation of which will significantly reduce the time required for design and commissioning.

A decisive role in deciding in favor of a flexible programmable controller or PC-based system is played by the presence of additional tasks not directly related to the problem of technological control, such as data processing tasks, visualization or communication functions. The higher the proportion of tasks of this kind, the more profitable the use of PC-based systems can be.

PC-based control with SIMATIC WinAC is much more than just a software version of a flexible programmable controller. An exceptional role is played by the WinAC-Controlling component, fully compatible with SIMATIC S7 controllers, with a card integrated into the PC. This component not only takes care of loading and running the control program, but also provides a means for the system to access distributed I/O devices via the PROFIBUS-DP bus, and also provides rich diagnostic functions. The SIMATIC WinCC component can be used as a visualization tool and is optimally integrated into WinAC. For those who wish to use other HMI software, it is possible to integrate this software via OLE or OPC interfaces. At present, the WinAC technology also includes regulation and positioning components. WinAC-Computing allows process data to be linked to standard software applications such as Excel or Access. And of course, within the system there is a component (WinAC-Networks) that allows connection to standard computer networks (eg TCP/IP).

The same STEP7 tools are used for system planning and programming as for SIMATIC S7 controllers (eg AWL, KOP, FUP, SCL, process chain programming).

LLC "Siemens", Moscow,

The Simatic S7-300 controller is designed to solve the widest industrial problems of various levels of complexity.
The presence of a significant number of various modules allows you to optimally configure the PLC for a specific task
Wide networking opportunities. With the S7-300 you can create industrial networks and integrate this PLC into existing network architectures
Compact and ergonomic body
Expandable system with CPU modules of different capacities
The presence of a huge number of built-in functions allows you to realize the power of the processor as fully as possible.

Siemens S7-300 PLCs have a significant number of certificates and approvals, including:

Metrological certificate GOST R and certificate of conformity
Maritime Register Certificate
Certificate of the General Directorate of State Energy Supervision on explosion protection IIC of SIMATIC S7 modules in explosion-proof version Ex
Permission to use the Federal Service for Nuclear, Environmental and Technical Supervision.

Siemens S7-300 controllers are most widely used in industry to solve problems of various levels of complexity, incl. for automation of various machines and mechanisms, machine-building equipment, electrical equipment, water supply systems, etc.

Siemens Simatic S7-300 application

Design features of the S7-300 PLC

The model range contains more than 20 types of CPU modules for tasks of any level of complexity.
Power supplies for both AC and DC networks
For the input and output of discrete and analog signals, the widest range of signal modules is offered, incl. modules with built-in explosion protection barriers, and FailSafe modules.
For the operation of the Simatic S7-300 PLC in various industrial networks, for example, PROFIBUS, Industrial Ethernet, PROFINET, AS-Interface or Point to Point communication systems, various communication processors have been developed and are being produced. Special SINAUT ST7 modules are used when you need to organize a modem connection based on the S7-300.
Functional modules are used to solve special problems of automatic regulation, positioning, weighing, motion control. Many of these modules are capable of operating independently from the CPU and continue to perform the tasks assigned to them even if the CPU fails or stops.
To increase the number of modules connected to the CPU, interface modules are used. This allows you to use up to 32 different modules, creating multi-row configurations with interface modules.

Convenience and flexibility

The modules are installed on a special profile rail. To connect the modules, special bus connectors are used, which are supplied with the module.

The modules have an arbitrary order of placement on the profile rail. Fixed placement only applies to power supply modules, CPU module, and interface module. Front connectors (supplied separately) are used for quick assembly and dismantling of modules, without the need to disconnect external circuits each time.

Features of CPU Units

performance
memory capacity up to 8 MB (loaded as an MMC card)
the widest possibilities for building networks

The CPU 3xxC and CPU 31xT-2 DP series CPU modules have built-in inputs and outputs, and they also have additions to the operating system in the form of technological functions, which makes it possible to use them as ready-made control units.

The standard set of technological functions is focused on solving the following tasks:

PID control
high speed account
measurement of frequency and duration of the period
work with discrete outputs in pulse mode

For diagnostics, building simple networks and programming, the Multi Point Interface (MPI) is used, which is equipped with all CPUs of the S7-300 series.

A significant part of the CPUs have an additional built-in interface:

The CPUs 31…-2 DP have a PROFIBUS DP master/slave interface;
CPU 31…C-2 PtP have an interface for Piont to Point communication;
CPU 31…-… PN/DP have an Industrial Ethernet interface, with PROFInet support;
The CPU 31…T-2 DP are equipped with a PROFIBUS DP/Drive interface designed for data exchange and synchronization of frequency converters functioning as DP slaves.

The CPU command system has more than 350 instructions, with which you can perform logical operations, arithmetic operations, data storage operations, etc. Step7 is used to write programs for Simatic S7-300 controllers.

Documentation and brochures for Simatic S7-300 in Russian

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Manual Siemens SIMATIC S7-300

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Summary

Below you will find applications that are on the next pages of the Siemens SIMATIC S7-300 manual. If you want to quickly view the contents of the pages that are on the next pages of the instructions, you can use them.

Controllers Siemens SIMATIC S7-300 standard version for operation in normal industrial conditions.
Siemens SIMATIC S7-300F controllers with built-in safety automation functions for operation in normal industrial conditions.
Siemens SIPLUS S7-300 controllers for outdoor installation and operation in harsh industrial environments.

Siemens Simatic S7-300 modular programmable controller

Siemens SIMATIC S7-300 is a modular programmable controller for universal use. Modular design, operation with free cooling, the possibility of using distributed I/O structures, and ease of maintenance make SIMATIC S7-300 economical to use in solving a wide range of automation tasks. Application areas of SIMATIC S7-300 cover automation:

Special purpose vehicles.
textile machines.
Packing machines.
General engineering systems.
Production of automation equipment.
Tool production.
Electrical and electronic industries, etc.

Several types of central processors of different performance and a wide range of modules for various purposes with many built-in functions allow for maximum adaptation of equipment to the requirements of the task being solved. With the modernization and development of production, the controller can be easily supplemented with the necessary set of modules. SIMATIC S7-300 is a universal controller:

It is ideal for industrial environments due to its high EMC, high vibration and shock resistance.
Modular universal programmable controller for solving automation tasks of low and medium complexity.
A wide range of modules for maximum adaptation of the equipment to solve any problem.
High flexibility, the ability to use distributed I / O systems, powerful communication capabilities.
Convenient design, easy installation, operation with natural cooling.
Ease of expansion of the system during the modernization of the facility.
High performance due to the presence of a large number of built-in functions.

Functions of Siemens SIMATIC S7-300 programmable controller

Siemens SIMATIC S7-300 programmable controllers support a wide range of functions that make it possible to simplify the process of program development and debugging to the maximum extent, reduce the cost of installation and commissioning, as well as maintenance of the controller during its operation:

Fast Command Execution: With command execution times of around 0.1 µs, the controller can be used to solve a wide range of automation tasks in various areas of industrial production.
Floating point math support: Allows you to support sophisticated complex digital information processing algorithms.
Convenient parameter setting interface: Simple tools with a single user interface are used to set the parameters of all modules. This significantly reduces the cost of staff training.
Human Machine Interface (HMI): The maintenance functions of the human machine interface are built into the operating system of the S7-300 controller. These functions greatly simplify programming: the SIMATIC HMI system or human-machine interface device requests the necessary data from the SIMATIC S7-300 controller, the controller transmits the requested data at a specified frequency. All data exchange operations are performed automatically under the control of the controller operating system. All tasks are executed using the same symbolic names and a common database.
Diagnostic Functions: The CPUs are equipped with an intelligent diagnostic system that provides continuous monitoring and logging of failures and specific events (timer errors, module failures, etc.). Messages about these events are accumulated in a ring buffer and are provided with date and time stamps, which allows further processing of this information.
Password protection: Password protection provides effective protection of user programs from unauthorized access, attempts to copy or modify the program.

Main characteristics of Siemens SIMATIC S7-300

S7-300 has a modular design and allows you to use a wide range of modules for various purposes. All modules operate with natural cooling. Depending on the type of CPU used, the local I/O system of the S7-300 programmable controller can include up to 32 modules. In this case, all controller modules are located in one base unit and expansion racks, which can be no more than 3. Expansion modules for Siemens SIMATIC S7-300:

Siemens CPU modules: to solve problems of various levels of complexity, several types of central processors of various capacities can be used, including models with built-in inputs/outputs and a set of built-in technological functions, as well as models with built-in PROFIBUS DP, PROFIBUS DP / DRIVE, Industrial Ethernet / PPROFINET, PtP interfaces.
- CPU 312 for automating small installations
- CPU 314 for automation tasks requiring more programs and faster performance
- CPU 315-2 DP for automation tasks requiring medium to large programs and distributed I/O systems based on PROFIBUS DP
- CPU 315-2 PN/DP for solving automation tasks requiring the use of medium and large programs, as well as distributed I / O systems based on PROFIBUS DP and PROFINET IO; can work in PROFINET CBA systems
- CPU 317-2 DP for solving automation tasks that require the use of large programs and distributed I/O systems based on PROFIBUS DP
- CPU 317-2 PN / DP for solving automation tasks that require the use of large programs, as well as distributed I / O systems based on PROFIBUS DP and PROFINET IO; can work in PROFINET CBA systems
- CPU 319-3 PN / DP for solving automation tasks with the highest requirements for the volume of programs, information processing speed, maintenance of distributed I / O systems based on PROFIBUS DP and PROFINET IO; can work in PROFINET CBA systems
- CPU 312C: Compact CPU with built-in digital inputs and outputs and support for high-speed counting functions
- CPU 313C: Compact CPU with built-in digital and analog inputs and outputs and support for high-speed counting functions
- CPU 313C-2 PtP: compact CPU with built-in digital inputs and outputs, additional serial interface and support for high-speed counting functions
- CPU 313C-2 DP: compact CPU with built-in digital inputs and outputs, optional PROFIBUS DP interface and support for high-speed counting functions
- CPU 314C-2 PtP: compact CPU with built-in digital and analog inputs and outputs, additional serial interface and support for high-speed counting and positioning functions
- CPU 314C-2 DP: compact CPU with built-in digital and analog inputs and outputs, optional PROFIBUS DP interface and support for high-speed counting and positioning
- CPU 315F-2 DP: for applications requiring medium to large programs and for maintaining distributed I/O systems based on a PROFIBUS DP network
- CPU 315F-2 PN/DP: for solving tasks requiring the use of medium and large programs, as well as servicing distributed I / O systems based on PROFIBUS DP and PROFINET IO networks; can be used in PROFINET CBA systems
- CPU 317F-2 DP: For applications that require large programs and distributed I/O systems based on a PROFIBUS DP network
- CPU 317F-2 PN/DP: for solving tasks that require the use of large programs, as well as servicing distributed I / O systems based on PROFIBUS DP and PROFINET IO networks; can be used in PROFINET CBA systems
- CPU 319F-3 PN/DP: for solving tasks that place the highest demands on program size, data processing speed, maintenance of distributed I/O systems based on PROFIBUS DP and PROFINET IO networks; can be used in PROFINET CBA systems
- CPU 315T-2 DP: for applications requiring medium to large programs, distributed I/O systems based on PROFIBUS DP, motion control with up to 8 axes
- CPU 317T-2 DP: for applications requiring large programs, distributed I/O systems based on PROFIBUS DP, motion control with up to 32 axes
Siemens SM signal modules used for input and output of digital and analog signals:
- Digital input modules SM 321.
- Digital output modules SM 322.
- Digital I/O modules SM 323 and SM 327.
- Analog input modules SM 331.
- Analog output modules SM 332.
- Analog I/O modules SM 334 and SM 335.
Siemens communication processors (CP) for connecting to industrial networks and organizing PtP connections:
- Siemens communication processors for communication via PtP interface.
- Siemens communication processors for servicing distributed I/O systems based on AS-Interface.
- Siemens communication processors for servicing distributed I/O systems based on PROFIBUS DP and PROFINET IO.
- Siemens communication processors for communication via PROFIBUS FMS.
- Siemens communication processors for communication via Industrial Ethernet.
Functional Siemens FM modules for solving problems of high-speed counting, positioning and automatic control:
- Siemens FM 350-1 counting modules
- Siemens FM 350-2 counting modules
- Siemens positioning modules
- Rapid Feed Modules Siemens FM 351
- Siemens FM 353 stepper motor modules
- Siemens FM 354 Servo Motor Modules
- Siemens FM 357-2 positioning and motion control modules
- Siemens SM 338 Ultrasonic Position Sensor Service Modules
- Siemens SM 338 POS synchronous-serial (SSI) positioning sensors service modules
- Electronic controller module Siemens FM 352
- Modules high-speed Boolean coprocessor Siemens FM 352-5
- Siemens FM 355 and FM 355-2 automatic control module
- Interface module for connecting positioning drive modules to PROFIBUS DP Siemens IM 178-4
- Siemens SIWAREX weighing and dosing system modules
Siemens PS power supply modules for powering SIMATIC S7-300 equipment and converting input voltages ~120/230 V or =24/48/60/110V into a stabilized output voltage =24V:
- Power supplies for SIMATIC S7-300 programmable controllers and SIMATIC ET 200M distributed I/O stations.
- For converting the input voltage of AC or DC and the formation of a stabilized output voltage = 24 V.
- Rated load current 2, 5 or 10 A.
Siemens IM interface modules for communication between the base unit and expansion racks in a multi-row controller configuration: Siemens IM 360/IM 361 and IM 365 interface modules allow you to create multi-row configurations of S7-300 programmable controllers (from CPU 313C, CPU 314 and higher), in which I / O modules are located not only in the base unit, but also in expansion racks. Expansion racks are connected via interface modules:
- Siemens IM 365: Connection to the base unit of one expansion rack. Up to 8 modules can be placed in an expansion rack. Distance between racks up to 1 m.
- Siemens IM 360/ IM 361: Connecting up to 3 extension racks to the base unit. Each rack can accommodate up to 8 modules. The distance between adjacent racks can be from 4 cm to 10 m.

Design features of the Siemens SIMATIC S7-300 controller

The design of the Siemens SIMATIC S7-300 controller is characterized by high flexibility, manufacturability and ease of maintenance:

Mounting modules: All modules are mounted on the S7-300 profile rail and fixed in working positions with screws.
Internal bus: Each module, excluding power supplies, has a built-in section of the controller's internal bus. Connections between modules are made using bus connectors mounted on the back of the housing. Bus connectors are included with all modules, excluding CPU and power supply modules.
Front connectors: Connection of external circuits of the signal and function modules is carried out via removable front connectors equipped with snap-on or screw-type contacts. The use of front connectors simplifies installation work and allows you to replace modules without dismantling their external circuits.
Mechanical coding: The first installation of a front connector on a module is automatically followed by its mechanical coding. In the future, the front connector can only be installed on modules of the same type, which eliminates the possibility of errors when replacing modules.
TOP Connect: Availability of flexible and modular connectors SIMATIC TOP Connect, which greatly simplifies the installation of external circuits of signal modules in control cabinets.
The installation depth is the same for all modules: Connecting cables and wires are placed in the installation channel of the module and closed with a protective door. This allows you to have a single mounting depth for all controller modules.
Equivalence of footprints: Most controller modules can be placed in mounting racks in any order. Fixed footprints should only be occupied by power supplies, CPU, and interface modules.
Mounting positions: Horizontal (the axis of the mounting rack is oriented in the horizontal plane) or vertical installation of mounting racks. When installed vertically, the cooling conditions of the modules deteriorate, so the upper limit of the operating temperature range is reduced to +40°C.

Siemens SIMATIC S7-300 extension

The local I/O system of the S7-300 programmable controller can include up to 32 signal, function, and communication modules (for S7-300 with CPU 312 or CPU 312C, up to 8 modules placed in the base unit). All modules are installed in the controller mounting racks, the functions of which are performed by S7-300 profile rails. In this case, the following rules must be observed:

Module placement: The controller can include one basic and up to three expansion racks. Up to 8 signal, functional and communication modules can be installed in each rack. The central processor is installed in the base unit.
Interface modules: Racks are connected via interface modules installed in the base unit and in each expansion rack (one interface module per rack). In the base unit, the interface module is installed to the right of the CPU. The possible expansion options for the local I/O system depend on the type of interface modules used: — The use of IM 365 interface modules allows connecting no more than one expansion rack to the base unit. The distance between the racks can reach 1m. The expansion rack modules are powered from the power supply unit of the base controller unit. The expansion rack cannot install communication modules and most functional modules. — The use of interface modules IM 360/IM 361 allows you to connect up to 3 expansion racks to the base unit. IM 360 is installed in the base unit, IM 361 in each extension rack. Expansion racks must come with their own power supplies. From

Industrial communication Siemens SIMATIC S7-300

The S7-300 programmable controller has extensive communication capabilities and allows you to use for organizing data exchange:

built-in PtP, MPI, PROFIBUS DP and Industrial Ethernet / PROFINET interfaces of central processors;
communication processors for connection to AS-Interface, PROFIBUS and Industrial Ethernet;
communication processors for organizing PtP communication.

Distributed I/O systems based on PROFIBUS DP

The Siemens SIMATIC S7-300 controller can be connected to a PROFIBUS DP network as a network master or slave via the built-in CPU interface or via the CP 342-5/CP 342-5 FO communication processors. Any connection option allows you to create distributed I / O systems with high-speed data exchange between its components. Access to the inputs-outputs of local and distributed I/O systems from the user program is performed in the same way. For this, the same configuration, addressing and programming options are used. PROFIBUS DP master functions are capable of:

SIMATIC S7-300/ S7-400/ C7 programmable controllers connected to the network via the integrated PROFIBUS DP interface of the CPU, communication processor or interface module (IM 467/ IM 467 FO in S7-400).
SIMATIC WinAC computer control systems connected to the network via the built-in PROFIBUS DP interface of the slot controller or via the PC's PROFIBUS DP communication processor.
SIMATIC S5-115U/H, S5-135U and S5-155U/H programmable controllers with IM 308 interface module.
SIMATIC 505 programmable controllers.

To ensure sufficient performance on a single PROFIBUS DP network, it is not recommended to use more than 2 masters. The following can be used as PROFIBUS DP slaves:

SIMATIC ET 200 distributed I/O stations.
SIMATIC S7-400 programmable controller CPUs with operating system from V3 connected to the network via the built-in PROFIBUS DP interface.
SIMATIC S7-300/C7 programmable controllers connected to the network via the integrated PROFIBUS DP interface or the CP 342-5/CP 342-5 FO communication processor.
DP/ASi communication modules that allow the DP master device to access sensors and actuators connected to the AS-Interface.
DP/PA communication modules and blocks that provide access for a DP master device to sensors and actuators connected to PROFIBUS-PA.
Video image analysis sensors of the SIMATIC VS 100/ 710/ 720 series.
Frequency converters of the MICROMASTER, SIMOVERT MASTERDRIVES and SINAMICS series.
Protective and low voltage switchgear with built-in DP slave interfaces.
Field instruments.

PG/PCs with STEP 7 installed as well as HMI devices and systems on a PROFIBUS DP network can only support PG/OP communication functions.

Distributed I/O systems based on PROFIBUS DP/DRIVE

PROFIBUS DP/DRIVE is an industrial network designed to organize cyclic data exchange with frequency converters in solving problems of positioning and motion control. In SIMATIC S7-300, this communication option is able to support the CPUs CPU 315T-2 DP and CPU 317T-2 DP equipped with an integrated PROFIBUS DP/DRIVE interface.

Distributed I/O systems based on PROFINET

SIMATIC S7-300 is capable of serving distributed I/O systems based on a PROFINET network. The PROFINET I/O controller functions are capable of:

Siemens SIMATIC S7-300 programmable controllers connected via built-in interfaces of CPU 315-2 PN/DP or CPU 317-2 PN/DP central processors.
Siemens SIMATIC S7-300/C7 programmable controllers connected via CP 343-1 V2 communication processor.
Siemens SIMATIC S7-400 programmable controllers connected via built-in communication processor CP 443-1 Advanced.

The functions of slave devices are capable of performing:

SIMATIC ET 200S stations with IM 151-3 PN interface module.
SIMATIC ET 200pro stations with IM 154-4 PN High Feature interface module.
SIMATIC VS 130-2 video image processing sensors.
PROFIBUS DP slaves connected via IE/PB IO Link module.

Programmers and computers equipped with STEP 7, as well as operator panels in a PROFINET network, only support PG/OP communication functions.

Distributed I/O systems based on AS-Interface

The connection to the AS-Interface is made via the CP 343-2/CP 343-2P communication processors, which act as an AS-Interface master in specification V2.1. It is allowed to connect to one communication processor:

up to 62 digital slaves serving up to 248 digital inputs and up to 186 digital outputs, or
up to 31 analog slaves serving up to 124 analog I/O channels
A full network cycle with 62 discrete slaves is 10 ms.

Data exchange via serial (PtP) communication channels

In the S7-300, communication via the PtP (Point-to-Point) interface is carried out via the built-in interfaces of the CPU 313C-2 PtP/CPU 314C-2 PtP CPUs, as well as via the CP 340 and CP 341 communication processors. Data can be exchanged via serial interfaces of the following types:

20 mA current loop (TTY) (CP 341 only),
RS 232/V.24 (only in CP 340/CP 341),
RS 422/RS 485.

Via PtP, the S7-300 interface can be connected to: computers, printers, scanners, robot control systems, modems, etc.

with programmable controllers SIMATIC S7, SIMATIC S5, programmable controllers from other manufacturers,
with computers
with robot control systems,
with printers,
with scanners, etc.

For the CP 341 communication processor, downloadable drivers for communication via Modbus RTU and Data Highway networks can be used.

Communication via MPI

The MPI interface is built into all types of SIMATIC S7-300 programmable controller CPUs. It can be used to build simple and inexpensive network structures.

Communication via PROFIBUS and Industrial Ethernet

Via communication processors, the SIMATIC S7-300 programmable controller can connect to PROFIBUS and Industrial Ethernet networks and support data exchange:

with programmable controllers SIMATIC S7-300/ S7-400/ C7/ WinAC;
with programmable controllers SIMATIC S5-115/ S5-135/ S5-155;
with programmers, industrial or personal computers;
with SIMATIC HMI devices and systems;
with numerical control systems, drives, robot control systems;
with programmable controllers and automation systems from other manufacturers.

To organize data exchange via PROFIBUS, the CP 343-5 communication processor is used, which provides support for the PROFIBUS FMS protocol. Three types of communication processors can be used for connection to Industrial Ethernet:

CP 343-1 Lean, providing support for the TCP / IP protocol, data exchange at a speed of 10/100 Mbps and operation in server mode;
CP 343-1 V2 supporting TCP/IP and PROFINET protocol and 10/100 Mbit/s communication;
CP 343-1 IT, capable of performing the functions of a WEB server and transmitting messages via e-mail channels;
CP 343-1 PN, which provides support for the PROFINET communication standard and allows the use of the S7-300 in modular CBA (Component Based Automation) systems.

Programmable controllers Siemens SIMATIC S7-300F

S7-300F programmable controllers are designed to build emergency protection systems in which the occurrence of failures does not endanger the life of the operating personnel, does not lead to environmental pollution, and does not cause other dangerous consequences. On the basis of S7-300F programmable controllers, emergency protection systems can be created that meet the requirements of:

safety classes AK 1 … AK6 according to DIN V 19250/DIN V VDE 0801;
safety levels SIL1 ... SIL 3 according to IEC 61508;
categories 1 … 4 according to EN954-1.

S7-300F programmable controllers are able to combine standard control functions with emergency protection functions. This allows you to create integrated automatic control systems that perform the functions of standard control in relation to one and the functions of automatic safety in relation to another part of the process equipment. A single set of industrial software is used to design and maintain such systems.

Programmable controllers for building emergency protection systems (F-systems).
Compliance with the requirements of safety levels SIL1 ... SIL3 according to IEC 61508, safety classes AK1 ... AK6 according to DIN V 19250, safety categories 1 ... 4 according to EN 954-1.
Based on the functionality of the S7-300 controller with F modules.
Combination of standard control functions with functions of emergency protection, support for mixed configurations, including conventional and F-I/O modules.

To build emergency protection and safety automation systems, the S7-300F programmable controller allows using local and distributed I/O systems. In a local I/O system, F modules of types SM 326 and SM 336 can be used for this purpose. However, SM 336 modules can only work in the local I/O system of an S7-300F programmable controller with a CPU 317F-2 DP. The S7-300F distributed I/O system can use:

ET 200M stations equipped with F-modules SM 326 and SM 336.
ET 200S PROFIsafe stations equipped with PROFIsafe electronic modules as well as power modules for load feeders and F-version frequency converters.
ET 200eco PROFIsafe stations.
ET 200pro PROFIsafe stations.

Operating modes of the Siemens SIMATIC S7-300F industrial controller

Safety functions are supported at the F-program level of the S7-300F CPU, as well as at the level of the F-modules of the local and distributed I/O system. Differences in the values of input and output signals are detected at the hardware level of the F-modules. The central processor controls the course of the program execution, performs a wide range of self-diagnostic functions, controls the course of the logical and temporary execution of the program. Additionally, the central processor provides control of the operability of the I / O system. When errors are detected, the process equipment is transferred to a safe state.

Programming industrial controller Siemens SIMATIC S7-300F

During operation, the CPU 315F-2 DP/CPU 317F-2 DP CPUs execute two program sections in parallel:

section for implementing standard control functions (standard program);
section for the implementation of emergency protection functions (F-program).

To develop a standard program, STEP 7 is sufficient. The programming technology does not differ from that adopted for the S7-300. To develop an F program and configure an F system, the STEP 7 package must be supplemented with the optional software "S7 F Distributed Safety". This package contains a library of T?V certified function blocks and functions used to develop an F program. Programming is done in LAD or FBD languages using F-library components. The use of other program modules in an F program is prohibited. The "S7 F Distributed Safety" package contains a large set of example F programs that can be adapted to the requirements of the problem to be solved.

Optional package Siemens S7 F Distributed Safety The package "S7 F Distributed Safety" can be integrated into STEP 7 from V5.1 SP3. However, the full functionality of this package can be implemented with later versions of the STEP 7 package.

Programmable controllers Siemens SIPLUS S7-300

Universal programmable controllers for use in harsh industrial environments based on the functionality of the SIMATIC S7-300 controllers.
Extended operating temperature range (-25 … +60°C), higher resistance to vibration and shock loads, operation in environments containing aggressive impurities and gases.
Ideal product for automotive, chemical industry, environmental protection installations, various industries, food industry, etc.
Replacement of expensive special-purpose systems.