scholarly journals Communication between PLC different vendors using OPC server improved with application device

Author(s):  
Ignatius Deradjad Pranowo ◽  
Y. B. Theo Bagastama ◽  
Thomas A. F. Wibisono
Keyword(s):  
2014 ◽  
Vol 519-520 ◽  
pp. 1173-1176
Author(s):  
Wen An Zhao ◽  
Xiao Hui Liu ◽  
Jing Sheng Lü ◽  
Chang Wang

Monitoring system for transformation and distribution equipments plays an important role in offshore platform safety production. This paper introduces the OPC technology and discusses the requirements and architecture of this monitoring system. For the convenience of monitoring data exchange, OPC technology is applied in the design and realization of the monitoring system. An OPC server is created for the monitoring data publication, and the monitoring system can get cable load current data from the OPC server in the central control system. In this way,the monitoring system can exchange monitoring data with the central control system more efficiently.


Author(s):  
V. V. Rusanov ◽  
V. I. Perov ◽  
M. A. Samoilov

In the article, the using of three computer programs was considered step-by-step. These programs are "Arduino IDE", "Modbus OPC Universal Master Server" and "Master Scada". They are using for creating projects of automation for public catering enterprises. There is an example of automation of the hot shop in this article, which demonstrates us the methods of engineering based on the modern digital technologies. If you want to learn how to create the projects using these programs, for the beginning, we recommend you to repeat our demonstration project. In the represented methods, we recommend using the integrated sensors for measuring options of technological processes of production dishes. Modern sensors of temperature, pressure, moving and humidity are adapting with microcontrollers very good. This fact allows to create compact, inexpensive devices for primary collection and processing of information. There was been showed the method of transferring of collected information to the computer of the supervisor on the example of created OPC-server. The supervisor can look for the processes, which are happening in the hot shop of the public catering establishment. The supervisor’s remote control is developed on the base of the «Master Scada» program. This is one of the most popular automation program. Creators of the «Master Scada» say that this program is widely used in such companies as «Gazprom» and «Rosatom». The wide possibilities of this program allow us in the three-dimensional graph to represent the objects of automation, to accelerate the executive and regulating mechanisms that are on the screen in front of the dispatcher. The practical example, which was demonstrated in this article, is limited by three mnemonic diagrams. First of them is the splash screen of the hot shop with the menu of the transiting to the mnemonic diagram of the controlling of the food-brewing boiler and the electrical frying cupboard. If operator switches over to mnemonic diagram of the food-brewing boiler, he sees the degree of filling boiler by the cooking liquor, the temperature of this liquor and time of the cooking. Using the control buttons operator can make changes to the program of cooking his dish. The program also looks for emergency modes, in particular, to prevent dry running..


Author(s):  
Martin Bartoň ◽  
Roman Budjač ◽  
Pavol Tanuška ◽  
Peter Schreiber ◽  
Tibor Horák

Abstract The design of control systems needs to ensure communication between multiple PLCs or external IoT devices. Furthermore, there are several ways of communication between them. This article dealt with the PLC communication based on TCP/IP protocol, and compared several communication options between two PLCs of the S7-300 and S7-1200 series connected using Profinet with a solution built in C# connected to the PLC via an OPC server. We used MODBUS TCP, TCON, and PUT/GET program blocks for comparison. We transmitted a digital Boolean data type and an analogue value of the integer data type via Profinet to read data from the S7-300 PLC and send data to the S7-1200. We compared the programming instructions standardly used as a client/server PLC programming with a Windows Forms application, and evaluated the advantages and disadvantages of this solution even when using external IoT devices. The solution was applied and successfully tested for communication between PLC S7-1200 and Nvidia Jetson Nano. We wrote program instructions for PLC in Siemens Tia Portal V15.


2019 ◽  
Vol 16 (2) ◽  
pp. 12
Author(s):  
Sukarno Sigit ◽  
Heri Suherkiman ◽  
Susanto Susanto
Keyword(s):  

Mode operasi reaktor RSG-GAS meliputi daya rendah (kW) hingga daya tinggi (MW). Saat ini penampil daya hanya menampilkan daya dalam orde MW. Untuk itu perlu dibuat penampil daya yang mampu menampilkan daya dalam range yang lebih lebar untuk melengkapi penampil daya yang ada. Perangkat penampil digital daya reaktor dibangun dengan perangkat OPC server, labview dan memanfaatkan kanal daya JKT04 yang digunakan sebagai pedoman penentuan besar daya reaktor. Dari hasil pengujian, program penampil digital daya reaktor berhasil menampilkan daya reaktor dari orde kW sampai dengan MW dan perhitungan faktor konversi arus JKT04 (ampere) ke skala daya (watt) dapat dilakukan secara akurat dan otomatis. Semua hasil perhitungan program dapat disimpan ke dalam file dalam format excel sebagai basis data. Perangkat ini dapat diterapkan di RSG-GAS dengan harapan dapat digunakan sebagai penampil daya untuk operasi daya rendah hingga daya tinggi dan sebagai sarana untuk menunjang penelitian tentang daya kalorimetri reaktor.Kata Kunci :Penampil daya, Faktor Konversi, Kanal daya, OPC server


2014 ◽  
Vol 8 (1) ◽  
pp. 234-239
Author(s):  
Jiejia Li ◽  
Peng Yang ◽  
Xiaoyan Han ◽  
Pengcheng Guo

To achieve the centralized monitoring and integrated management of the central air-conditioning system, taking the characteristics of data communications and control complexity in the air-conditioning system into consideration, and combined with the OPC (OLE(Object Linking and Embedding) for Process Control) technology, an intelligent central airconditioning supervisory system is developed and designed. In this paper, after searching the OPC technology standard, the overall structure diagram of the monitoring system is designed, and the OPC server program is also developed by using Knight OPC Server Rapid Development Toolkits. The OPC client application program and man-machine interface are exploited by KingView configuration software. The monitor and control system whose interface is opened is designed for the central air-conditioning. In the end, the experiment result proves that the system operation has good performance for temperature-controller and humidity-controller clustered controlling as well as data communications, thus, satisfying the requirements.


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