PLC

2020

Politeknik Ungku Omar, 2021

The PROGRAMMABLE LOGIC CONTROLLER (PLC) : PROGRAMMING & APPLICATIONS is specially written for a course in PLC & Automation. The main objective in writing is to guide student understand about PLC System and how to design PLC Programming based on OMRON PLC such as CPM2A or CPM1A type. This eBook consists of five chapters, namely: Chapter 1 : PLC Programming Chapter 2: Basic Logic Instruction Set Chapter 3: Timer & Counter Instruction Set Chapter 4: Special Instruction Set Chapter 5: Application PLC Programming This eBook focuses on the basic PLC system, PLC programming and PLC instruction set. Besides that, method for design simple PLC programming using a ladder diagram and instruction list (mnemonic code) are also exposed. Each sub-topic in this book is also accompanied by a self-assessment to evaluate the student learning outcomes.

2008 Annual Conference & Exposition Proceedings

2003

2010

Bulletin of the Polish Academy of Sciences Technical Sciences, 2016

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.