SCADA system software of Hangzhou Jiangxing Technology

  1、 Overview of SCADA system software of Jiangxing (www
hzjux
com)
Supervisory  control  and  data  acquisition: the data acquisition and monitoring control system is to monitor and control the industrial field operation equipment with long distribution distance and scattered production units, and realize various functions such as data acquisition, equipment control, measurement, parameter adjustment and various signal alarms
Through the network system, the production field status can be transmitted to different monitoring platforms, And it is displayed in the form of sound, graphics, images, etc

The SCADA system software of Jiangxing is located between the field control layer and the upper MES data application layer
It communicates with the control layer in OPC, tcp/ip, serial port and other ways, and sends the data to the upper MES business system through OPC, WCF, WebService, DCOM and other ways

2、 Operation of SCADA system software of Jiangxing
The system connects various intelligent control devices in the factory through opc/modbus/secs and other industrial protocols, and combines the intelligent control devices with the production process and transaction management equipment or instruments, senses various parameter states of the equipment in real time, converts these state signals into digital signals, and transmits them to PLC equipment through a specific digital communication network

The control equipment connected to the software of Jiangxing SCADA system is usually PLC (programmable controller), or smart meter, board card, etc
after receiving the feedback information of PLC, smart meter, board card and other equipment, the system displays it to the user terminal in the form of sound, graphics, images and so on, so as to achieve the purpose of monitoring
Through the integration of SCADA system and MES system, SCADA system is responsible for real-time communication, real-time recording and alarm with equipment
After processing, its key information will be transferred to MES system for archiving and business logic processing
Some events of SCADA system can trigger process transactions in MES
At the same time, process control logic, operation parameters, recipes and other information in MES can also be handed over to SCADA system for execution

3、 Software structure of Jiangxing SCADA system
The SCADA system software of Jiangxing includes three structures: the lower layer of field equipment, the middle layer of process monitoring and the upper layer of business management, covering different levels from the lower layer of field equipment to the upper layer of information network
Through these three structures, the industrial production process can be collected and monitored, and the data exchange and transmission with the enterprise information system can be completed, such as ERP system, MES system, etc

1
Lower field equipment level
The direct control function is to collect field data of industrial process and execute control instructions
Including various sensors, instruments, actuators and other field devices, using open fieldbus protocol, various field devices are connected to the fieldbus network in the form of network nodes to form a real-time networked field control system
The field equipment layer receives the monitoring of the process monitoring layer and transmits various field data to it

Functions of lower field equipment layer
Data collection: configure various input devices (DI, AI, etc
) for data collection
Control: configure various output devices (do, Ao, etc
) to control field devices
Equipment type of lower field equipment layer
Remote terminal unit (RTU)
RTU (remote terminal unit, RTU) is an electronic device installed in the remote site, which is used to monitor and measure the sensors and equipment installed in the remote site
It has the advantages of improving the reliability of signal transmission, reducing the burden of the host, reducing the amount of signal cables, saving installation costs and so on

The main function of RTU is data acquisition and local control
As an independent workstation in the system, it can independently complete the control and coordination functions commonly used in industry, such as interlock control, feedforward control, feedback control, PID, etc; As a remote data communication unit during data acquisition, it completes or responds to the communication and remote control tasks between the station and the central station or other stations

RTU configuration and program execution: it is mainly configured with CPU template, i/o (input / output) template, communication interface unit, communication machine, antenna, power supply, chassis and other auxiliary equipment; The task flow that RTU can perform depends on the program downloaded to CPU
The application program can be written in the programming language commonly used in engineering, such as ladder diagram, C language, etc
some devices are programmed in C language

PLC (medium and small)
Typical small PLC products include Mitsubishi FX2N system PLC, Siemens S7200 system, Omron cpm1a, etc; Some SCADA systems will use medium-sized PLC products, such as Mitsubishi's Q series, Siemens' S7-300, A-B company's ControlLogix and Schneider's quantum series
PAC (Programmable Automation Controller)
As an open automatic control equipment, the application of PAC in the lower field equipment layer of SCADA system is gradually increasing
The main products include: pacsystemsrx3i/7i of GE Fanuc company, compact FieldPoint of Ni company, CX1000 of beckoff company, CompactLogix of A-B company and adam-5510ekw of Yanhua company
intelligent instrument
In some applications that focus on data acquisition, centralized information management and remote supervision, the requirements for remote control functions are relatively low
In this kind of SCADA system, a large number of field instruments are used as lower level equipment, such as intelligent flow meters, cooling and heating meters, intelligent patrol meters, etc

2
Middle process monitoring layer
This layer mainly focuses on the monitoring function, which is generally completed by the control computer
It is connected with the fieldbus, or through a special fieldbus interface converter to realize the connection between the fieldbus network segment and the Ethernet segment
This layer obtains the data of industrial process from the field equipment layer, completes the functions of operation parameter monitoring, alarm and trend analysis, and sends various control instructions

Composition of middle process monitoring layer
Including master control server, backup server, database server, man-machine interface, field network and Ethernet conversion equipment of SCADA system

Functions of middle process monitoring layer
Data acquisition and status display
Remote monitoring
Alarm and alarm processing
Accident recall and trend analysis
Integration with other application systems
Choose industrial computer or commercial computer
The industrial control computer is generally used in the middle process monitoring layer, because the industrial control computer has been modified and reinforced on the commercial computer to meet the requirements of industrial applications, mainly reflected in: hardware structure, system reliability, anti-interference and environmental adaptability
With the increasing reliability of commercial computers and the large price gap between commercial computers and industrial computers, the SCADA system software selects commercial computers as the middle-level upper computer
For occasions with high reliability requirements, it can be achieved by hot standby and other means

3
Upper business management
It is mainly the enterprise information network, which is usually connected with the Internet
It is an ordinary IP network, which includes all kinds of general servers, hosts, network equipment, security protection equipment, etc
, and provides network services such as web, FTP, mail, etc
In the software control network model of Jiangxing SCADA system, the close integration of control network and information network is realized through data transmission and interaction between field equipment layer, process monitoring layer and business management layer
In addition, there is usually a remote user access point in this layer, which allows remote users to query the network operation status and the status of field equipment through browsers and other means, and monitor the production process in real time
For authorized users, they can also modify various equipment parameters and operating parameters remotely, so as to realize the remote monitoring of industrial processes in the wide area network

The data demand of ERP is connected to the workshop, which means that SCADA will become a bridge for the deployment of ERP system
In order to transmit the production * and workshop data to the ERP system, it is necessary to connect the industrial network where the production systems such as SCADA and MES system are located to the IT network
Most of the SCADA system software of Jiangxing technology is connected to the enterprise network, and the remote access system can be connected from anywhere through the virtual private network (VPN)

4、 Function characteristics of SCADA system software of Jiangxing
  1
Graphical interface
The interface adopts modular design and considers the overall process flow
The data points are closely related to the interface, which can graphically display the production process of the factory, and hook up and display the machine indicators in real time, so that people can intuitively monitor the whole system and view the collected data
The overall interface adds the visual processing elements of the equipment, so that it can be known easily by looking at the pictures

2
Dynamic simulation of system status
Generally, the SCADA system software of Jiangxing transmits data to the monitoring center in real time, and the dynamic simulation can be used to intuitively monitor the system

3
Real time data and historical trends
Jiangxing SCADA system software records the history of each data point, and the recording frequency reaches the second level
Only by recording the real-time data completely and using the relevant calculation methods to calculate the relevant data on this basis, the system can play a real role

4
Alarm processing system: when the system has abnormal conditions, the system can send alarm information and deal with relevant problems in time

5
Data acquisition and recording: the system collects the data distributed in various places to the monitoring center through relevant data acquisition equipment, and records it for the system to use
You can specify any time period to retrieve data and form data tables and curve trends to help users better analyze the stability of indicators and whether there are abnormalities;
6
Data analysis: Jiangxing SCADA system software will conduct relevant analysis of the data, and the analyzed data can be used for the decision-making data support of the manager
7
Report or chart output, and graphically display the collected data and analysis data or report words
  5、 Application case of SCADA system software in Jiangxing
 
 
 
 
 
Original website: http://www
hzjux
com/SCADAxitongruanjian/