This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The analysis of modern technologies for the construction of automated control systems (ACS) and ways to expand their functionality based on modern Internet technologies has been carried out. One of the ways to extend the functionality of the ASC is to use a WEB-server integrated into the PLC (Programmable Logic Controller). Especially useful is the use of integrated WEB-server PLC is during commissioning for flexible access to the PLC for visualization of data and processes, as well as diagnostic purposes. At the same time, it is economically feasible to use access mechanisms through the Intranet and Internet networks based on standard WEB browsers, like HTML or JavaScript. A PLC-based WEB-server was developed using the AWP (Automation Web Programming) language, the commands of which are integrated into HTML files. AWP is supported by the Simatic S7 PLC WEB server and provides for reading and writing standard and special variables, defining array types, assigning variables for array types, creating blocks of fragment data, displaying PLC data in graphical form, creating and displaying graphical elements, displaying diagnostic information, PLC restart). This technology supports two types of WEB-pages - standard (for displaying service and diagnostic information) and user (for access to technological data and control functions) with access through local and global information networks, including through mobile terminals. The experience of using the technology in question has been tested in the development and operation of distributed automated process control systems by technological objects, which indicates the relevance of the tasks being solved, are formulated when building an automated control system with advanced functionality based on modern information technologies.
Automated control systems, PLC (Programmable Logic Controller), HTML (Hypertext Markup Language), JavaScript, Automation Web Programming (AWP), WEB-server
The statements, opinions and data contained in the journal are solely those of the individual authors and contributors and not of the publisher and the editor(s). We stay neutral with regard to jurisdictional claims in published maps and institutional affiliations.
