Temat: control program - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: On the systematic method of conditional control program execution by a PLC
Autorzy:: Milik, A.
Chmiel, M.
Hrynkiewicz, E.
Powiązania:: https://bibliotekanauki.pl/articles/201968.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: control program
PLC
LD
IL
FPGA
compiler
control program optimization
PLC programming
flow graph
program sterujący
kompilator
kontrola
optymalizacja oprogramowania
programowanie sterowników PLC
wykres przepływu
Opis:: The paper presents an original idea of the selective control program execution that allows significant response time reduction. The exhaustive analysis of the PLC program performance is given. An analytic approach explains the idea of the selective control program evaluation and gives the requirements for its feasibility. There is presented a systematic and formal method of program analysis based on a data flow graph approach. The method generates acyclic graph from the control program that is subject of optimization, variable allocation and instruction generation. The graph approach allows determining variables dependencies and task partitioning required by selective program execution. The method utilize the hardware supported variable changes detection. It is transparent for system operation and enables evaluation of blocks that require update.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 1; 161-170
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Mini-DCS system programming in IEC 61131-3 structured text
Autorzy:: Rzońca, D.
Sadolewski, J.
Stec, A.
Świder, Z.
Trybus, B.
Trybus, L.
Powiązania:: https://bibliotekanauki.pl/articles/384239.pdf
Data publikacji:: 2008
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: mini-DCS system
control program execution
ST language
compiler
IEC 61131-3 standard
virtual processor
Opis:: A prototype environment called CPDev for programming small distributedsmall-distributed control-and-measurement systems in Structured Text language of IEC 61131-3 standard is presented . The environment is open what means that the code generated by the compiler can be executed on different hardware platforms. However, such universal code must be processed by an interpreter, another words by a virtual machine,an interpreter, another words by- a virtual machine, must process such universal code similarly as programs written in Java. The CPDev environment consists of the compiler, simulator and configurer of hardware resources (i.e. communications). They are developed in C# at MS.NET Framework 2.0 platform. CPDev is open allowing the user to create function blocks and libraries. External interface procedures (drivers) can be written by hardware designers and linked with the universal code. Free selection of data types required by different applications is provided. Virtual machine written in ANSI C is dedicated for a particular processor. So far the machines for AVR, MCS-51 and PC have been developed. Programming a mini-DCS system from LUMEL Zielona Góra has been the first application of CPDev.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2008, 2, 3; 48-54
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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