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- Title
Analysis of the Influence of the Programming Approach on the Response Time in PLC Control Programs.
- Authors
Gergely, Eugen Ioan; Coroiu, Laura; Popentiu-Vladicescu, Florin
- Abstract
The paper analyses two approaches to organize the control requirements in PLC programming and the PLC response time provided by these approaches. The first one, the output-oriented approach, uses switching tables in order to provide outputs equations. The second approach, the stateoriented approach, uses the state diagram which defines the control steps for the process operation. Each approach is illustrated by applying it to determine the Boolean equations required to meet specified control requirements for a given case study. It is shown that the output-oriented approach is recommended only in time-critical applications and in program memory critical systems, where delays affect the reliability and the performability of the control system. For all other applications the state-diagram approach is preferable..
- Subjects
PROGRAMMABLE controllers; PROGRAMMABLE logic devices; FIELD programmable gate arrays; NETWORK processors; PROGRAMMABLE array logic; PROCESS control systems; AUTOMATIC control systems; ELECTRONIC controllers; BOOLEAN algebra
- Publication
Journal of Computer Science & Control Systems, 2010, Vol 3, Issue 1, p61
- ISSN
1844-6043
- Publication type
Article