Converting PLC instruction sequence into logic circuit: A preliminary study

Ichikawa, Shûichi; Akinaka, Masanori; Ikeda, Ryusuke; Yamamoto, Hiroshi

doi:10.1109/isie.2006.296082

Cited by 24 publications

(21 citation statements)

References 8 publications

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“…In a recent paper [2] the authors have investigated alternative methods for translating a PLC program to an equivalent logic circuit, which is suitable for FPGA implementation. They showed that this technique can lead to impressive performance improvements due to the parallel implementation of the PLC instructions.…”

Section: Introductionmentioning

confidence: 99%

“…In [2] the authors have treated each type of arithmetic operation as an atomic unit, implemented by an indivisible hardware module and they have used a simple ASAP (As Soon As Possible) scheme for allocating shared resources. As they rightly point out, there is a potential for improving the performance by using a better algorithm and the investigation of the alternative possibilities is an open research problem, which needs to be addressed.…”

Section: Introductionmentioning

confidence: 99%

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FPGA implementation of PLC programs using automated high-level synthesis tools

Economakos¹,

Economakos

2008

2008 IEEE International Symposium on Industrial Electronics

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Although the performance of traditional PLC technology is adequate for the majority of industrial automation and control tasks, there exist a number of demanding applications, which need more powerful alternatives. One such alternative, which has received considerable research interest in recent years, is the implementation of control algorithms on FPGAs. An inherent difficulty of this approach is that it requires expertise in both industrial automation and FPGAs. In this paper we propose a fully automated design methodology for producing efficient FPGA implementations of PLC programs. The PLC programs can be prepared by automation experts using their familiar programming environments and the conversion to FPGA is done by automated high-level synthesis tools. The advantages of this approach are demonstrated on a number of standard industrial control applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

FPGA implementation of PLC programs using automated high-level synthesis tools

Economakos¹,

Economakos

2008

2008 IEEE International Symposium on Industrial Electronics

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“…The constraint of the limited number of resources is fully justified. The available logic resources are partially reserved for Boolean variables processing and the controller framework [3,5].…”

Section: The Operation Mappingmentioning

confidence: 99%

“…The implementation of the control algorithm with use of reprogrammable and reconfigurable logic has been proposed by different research groups [3,5,8]. In opposite to software solutions hardware offers intrinsic parallel execution of the tasks.…”

Section: Introductionmentioning

confidence: 99%

Automatic implementation of arithmetic operation in reconfigurable logic controllers

Milik

Pułka

2011

2011 20th European Conference on Circuit Theory and Design (ECCTD)

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The paper presents a package of arithmetic operation synthesis dedicated to reconfigurable logic controllers programmed according to IEC1131 and EN61131. The program is compiled to hardware structure with a massive parallel processing. The developed method automatically allocates resources and operations. It controls resource usage and operation timing. Using mixed concept of operation allocation that considers operation timing and forms combinatorial chains of operations number of execution cycles can be reduced. Finally an example of PID controller implementation is considered and compared with previous manual implementations. Introducing the automatic implementation method allows flexible implementing the control algorithms. The maximal possible parallelism (limited only by the algorithm dependencies and available resources) is introduced.

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“…These advantages provide more flexible and cheaper systems. The flexibility and benefits of FPGA technology to carry out RLCs in order to implement parallel control strategies in a natural way has been proved in the last years [3] [4]. Nevertheless not all is good; there are some drawbacks, these are: users of traditional controllers designing methods do not have a good knowledge of the FPGA technologies, a generalized method in order to encode parallels controllers describing industrial processes is needed, this method must be easily translated into HDL, it has to enable tools to debug the designs to configure the hardware, therefore it has to achieve a hardware platform containing the FPGA, the input and output circuits and the communication with the user PC when the designing, configuring and debugging processes are carried out.…”

Section: Introductionmentioning

confidence: 99%

Methodology to Implement Logic Controllers with both Reconfigurable and Programmable Hardware

Silva

Quintans

Mandado

et al. 2007

2007 IEEE International Symposium on Industrial Electronics

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The flexibility and benefits of Field Programmable Gate Arrays (FPGA) technology to carry out Reconfigurable Logic Controllers (RLC) in order to implement parallel control strategies in a natural way has been recently proved. Moreover, Programmable Logic Controllers (PLC) are widely introduced in the industrial market. Therefore the necessity of obtaining a global and complete solution to combine traditional design process and the hardware implementation with both technologies appears. This paper describes a hardware-software platform which enables the implementation of logic controllers with both PLC and RLC. The software aids the development of logic controllers using design methods based on Petri Nets (PN) and translates them into instruction lists or into Hardware Description Language (HDL) codes. The hardware utilized is formed by a commercial Simatic S7 and a specific reconfigurable hardware which consists of a main card, combining a Cyclone FPGA and a USB controller, and on a set of digital and analog I/O cards. This hardware, as well as doing typical automation tasks, contributes to achieving additional characteristics such as simulation and monitoring.

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Converting PLC instruction sequence into logic circuit: A preliminary study

Cited by 24 publications

References 8 publications

FPGA implementation of PLC programs using automated high-level synthesis tools

FPGA implementation of PLC programs using automated high-level synthesis tools

Automatic implementation of arithmetic operation in reconfigurable logic controllers

Methodology to Implement Logic Controllers with both Reconfigurable and Programmable Hardware

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