DCS system - Siemens S7-200

DCS system - Siemens S7-200, is a small programmable controller suitable for automation of detection, monitoring, and control in various industries and occasions; The powerful features of the S7-200 series enable it to achieve complex control functions whether operating independently or connected into a network. Therefore, the S7-200 series has a very high performance/price ratio.

The DCS system - Siemens S7-200, is composed of digital, analog, specific, or communication - with basic functionality provided by five different CPUs for expansion and independent module scalability. Programming is based on the easy-to-use engineering software STEP7 Micro/WIN. Therefore, the SIMATIC S7-200 micro PLC is a reliable, fast, and flexible controller in the field of micro automation.

DCS System - Siemens S7-200 Series CPU Features

SIMATIC S7-200 provides a unified and cost-effective solution.

Powerful performance, modularity, and open communication.

S7-200 has superior performance and has been tested for a long time, suitable for various applications in the industrial field:

Compact and compact structure - an ideal choice for any application in small spaces;

Basic and advanced features across all CPU models;

Large capacity program and data storage;

Outstanding real-time response - complete control of the entire process at any time, thereby improving quality, efficiency, and safety;

Easy to use STEP 7-Micro/WIN engineering software - an ideal choice for beginners and experts;

Integrated R-S 485 interface or used as a system bus;

Extremely fast and precise operation sequence and process control;

Complete control of time critical processes through time interruption.

S7-200 design features and optional modules

Modularize 5 different CPUs within the performance range, with comprehensive basic functions and integrated Freeport communication interface

A series of expansion modules for various functions:
- Digital/analog extension, upgradable to specific requirements, serving as PROFIBUS communication for slave stations
AS Interface communication as the main station
- Accurate temperature measurement
- Positioning
- Remote diagnosis
- Ethernet/Internet communication
－SIWAREX MS
weighing module

HMI function

STEP 7-Micro/WIN software with Micro/WIN additional instruction library

Remarkable systems engineering - currently characterized by precise dimensional solutions for various requirements of complete automation tasks.

Main Features

Highlight the use of memory cards for data recording, recipe management, STEP 7-Micro/WIN project savings, and file storage in various formats

PID automatic tuning function

Two built-in serial ports for expanding communication options, such as compatible with devices from other manufacturers (CPU 224 XP, CPU 226)

CPU 224 XP with built-in analog input/output

real-time response
Advanced technology ensures outstanding real-time responsiveness of our CPU, down to the details in the future

4 or 6 independent hardware counters, each 30 kHz, 2 x 200 kHz with CPU 224 XP, for example: precise path monitoring through incremental encoders or high-speed recording of process events

4 independent alarm inputs, input filtering time 0.2 milliseconds to program start - process safety

Pulse capture function for application fast events with signals greater than 0.2 ms

2 pulse outputs, each 20 kHz, or 2 x 100 kHz for CPU 224 XP with pulse width modulation and pulse free set point - for example: used to control stepper motors

2 timed interrupts, starting at 1ms and adjusting in increments of 1ms - used for disturbance free control of rapidly changing processes

Fast analog input - with 25 μ s signal conversion and 12 bit resolution

Real time clock timing interrupt

1 to 255ms, with a resolution of 1ms

For example, after a quarter turn, signals can be recorded and processed on the screw insertion machine at a speed of 3000 RPM. It can achieve very accurate recording, such as tightening torque, to ensure screw tightening.

Fast counter

Running independently of each other, other operations, and program cycles

When the user selectable calculation value is reached, the interrupt triggers a response time of 300 μ s from detecting the input signal to switching the output

Four edge evaluation when incremental position encoder is used for precise positioning

Modular Scalability

alarm input

4 independent inputs

Used for rapid and continuous registration of signals

Response time of 200 μ s-500 μ s for signal detection/300 μ s for signal output

Response to positive and/or negative signal edges

16 interrupts in a queue, depending on priority order

S7-200 expansion module

S7-200 is designed as a unified modular system. It provides a modular system that can be expanded to meet your needs. Expansion modules include I/O from 4/4 to 32/32, analog modules from 4/0, 8/0, 0/4 to 4/1, and performance modules for switching loads: 5A DC or 10A relays.

7-200 Controller Software

Engineering Software STEP 7-Micro/WIN

The characteristics of STEP 7-Micro/WIN programming software are time-saving and powerful tools - which means significant cost savings in your daily work. The operation of programming software is the same as standard Windows applications. Micro/WIN includes all the tools needed to program the entire S7-200 series controller. You have a powerful SIMATIC instruction set at hand that can be programmed according to IEC 1131. Many features such as trend charts and guides make programming easier. STEP 7 Micro/WIN is also used to configure text display in the Micro Panel product series.

Human computer interface software WinCC flexible Micro

WinCC flexible Micro is an affordable engineering package specifically designed for configuring operator control panels related to SIMATIC S7-200: OP 73micro and TP 177micro. Here are the key points: simple and quick configuration through a user-friendly interface, pre designed graphic objects and intelligent tools, as well as multilingual capabilities. Download requires S7-200 PC/PPI cable. It is as easy as using the compact, standard, or premium versions of WinCC flexible.

Communication software PC Access

7-200 PC Access is an OPC server used for the S7-200 target system. It supports economical and progressive processing and visualization of data from SIMATIC S7-200 automation systems through standard Windows applications such as Visual Basic, Visual C++, and Excel. The S7-200 PC Access is certified by the OPC Foundation and can be used for all OPC standard clients.
As an OPC server, this tool provides the ability to read and write S7-200 data through any OPC client. As an OPC client, it can be used in conjunction with human-machine interface software packages. An interface that visualizes up to 8 connections and supports time-saving and cost-effective configuration, programming, and monitoring through PC Access. It also provides quick access through different extension modules. CP 243-1 IT Internet module connects PLC to different computers simply and comprehensively through FTP. The CP 243-1 Ethernet module supports fast access to S7-200 storage and processing data. Moreover, the configuration support of STEP7 Micro/WIN ensures simple debugging and convenient diagnosis.