FEATURES OF OPERATOR PANEL PROGRAMMING ИП320 FOR USE AS A HUMAN-MACHINE INTERFACE

Abstract

Designing control systems or individual circuits of such systems often involves exchanging data with such systems, which involves obtaining and transmitting information about various production parameters. Modern control systems are quite complex, and the vast majority of them involve participation in their human work. In turn, it is convenient for a person to have a humanmachine interface, that is, for example, forming commands using buttons, and making alarms using sound and light. One of the elements of the human-machine interface are control panels designed to control simple production processes or individual production operations. A feature of such control panels is often the small size of their screen, on which you need to place your own controls (rows for entering and output values of production parameters, graphs for displaying production parameters, and so on), and a large number of such parameters. It is ИП320 possible to communicate with the operator’s panel only using the Modbus RTU protocol, according to which one Modbus case holds exactly 16 bits. Usually, each of the production parameters of the control systems has its own “bit” (for example, to transmit the status of the button is sufficient 1 bit, to transmit the value of temperature or flow – 32 bit, to transmit the text message – the number of bits, multiple of 8). Accordingly, the distribution of production parameters of control systems between Modbus-registers often has a rather confusing appearance. Therefore, before putting the operator’s panel into operation in a specific production process, it is advisable to test it in different modes of operation, for which you can create your own SCADA-system on a personal/industrial computer and sequentially, sorting out your own control panels of the operator’s ИП320, analyze all the features of their work. To do this, a small own SCADA-system was created on a personal computer in the C# programming language in the Visual Studio 2022 programming environment, which showed the effectiveness and feasibility of its work.