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What is a PLC,
Programming
| Types
of Programming Software Languages LL984 - Traditional ladder logic is an easy-to-use graphical programming language that implements relay-equivalent symbology. The IEC 61131-3 standard brings many common practices and proven techniques together with new, structural, high-productivity (development) tools. It enhances the quality of the application software through well structured design, data and control code encapsulation and information hiding. IEC Standard provides a well defined suite of inter-linked languages for solving a large variety of industrial control problems. Function Block Diagram (FBD) - Continuous control and/or discrete control Structured Text (ST) - Equations, table manipulation, complex algorithms Instruction List (IL) - Fastest possible logic execution Ladder Diagram (LD) - Discrete control Sequential Function Chart (SFC) -A graphical method of representing a sequential control system
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