A general-purpose computing platform and its use as a hardware

ISSN: 
2776-1010

Volume 3, Issue 2, Feb, 2022 

89 
case, the operator, having one mobile terminal, can perform preventive maintenance of automation 
units one by one. 
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Remote configuration and diagnostics (including over the Internet, being at a distance from the 
control object). Based on the access channel to the global network, communication with the diagnostic 
center, which can be located anywhere in the world, is determined. Experts carry out remote collection 
of information about the control object, including during its operation. 

Possibility of remote loading and debugging of logic control programs, which allows implementing a 
single terminal from which a logic control program is debugged for a group of systems, usually located 
within the same workshop. 
Use of real-time operating systems. There are a number of real-time operating systems available in the 
system software market today that are installed on general-purpose computing platforms. As a result, 
a full-fledged logic controller is obtained, which is used as a node of automation systems for solving a 
wide range of tasks. As such operating systems, Siemens uses Windows 7 version Legasy (adapted 
version for Siemens controllers with real-time extension) and Embaded, Rockwell Automation - 
Windows 10 IoT, B&R - Windows 7 Embaded, Windows 10 IoT, Debian 8, Russian company Fastwell 
– Windows XPe, Linux RT, QNX [5], etc. The specified operating systems (OS) support, among other 
things, real-time operation on mobile platforms. Open source real-time operating systems (RTOS) are 
developing rapidly, dynamically and faster than highly specialized operating systems designed to work 
with specific hardware options. When using publicly available RTOS in industrial control systems, it is 
necessary to take into account the legal aspect, according to which a license for an RTOS can only be 
purchased by control system developers who sell ready-made equipment with pre-installed OS to end 
users. Sale and resale of the OS separately from the finished device is not possible. The use of a publicly 
available RTOS offers a number of advantages, among which the following can be highlighted: 
• Work in a familiar user interface based on windowed applications when designing and debugging 
program code. Most RTOS systems have analogs among general-purpose operating systems (for 
example, Linux - Linux RT, Windows - Windows Embaded, etc.), in which applications can be 
developed and debugged. The user's style of work will not differ from the style of work with home PC 
and will be intuitive. At the same time, standard libraries of elements are available for programmers of 
interface applications (for example, operator terminals), which greatly facilitate development. For 
general-purpose operating systems, the instrumental support of software development is at a high level, 
there are well-proven development tools, including hose used for large projects [6, 7]. 
• Use of unified execution environment in which the main functional modules of the control system 
operate. In the frame of single execution environment, the operation of the logical control kernel, 
operator terminal, programming subsystem and other modules is assumed, one of the standard 
mechanisms (shared memory, TCP / IP protocol on the local bus) provides the interaction of which. 
• The control system allows implementing a connection based on supported network protocols (for 
example, TCP \ IP, UDP, etc.) of external devices, such as mobile operator terminal, remote monitoring 
and configuration system, etc. 
• Reducing the cost of the control system by reducing the cost of developing specialized system software. 

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