Package matiec: Information

This project has the goal of producing an open source compiler for
the programming languages defined in the IEC 61131-3 standard.
These programming languages are mostly used in the industrial
automation domain, to program PLCs (Programmable Logic Controllers).

This standard defines 5 programming languages:
  - IL : Instructtion List
         A textual programming language, somewhat similar to assembly.
  - ST : Structured Text
         A textual programming language, somewhat similar to Pascal.
  - FBD: Function Block Diagram
         A graphical programming language, somewhat similar to an
         electrical circuit diagram based on small scale integration
         ICs (Integrated Circuits) (counters, AND/OR/XOR/... logic
         gates, timers, ...).
  - LD : Ladder Diagram
         A graphical programming language, somewhat similar to an
         electrical circuit diagram based on relays (used for basic
         cabled logic controllers).
  - SFC: Sequential Function Chart
         A graphical programming language, that defines a state
         machine, based largely on Grafcet. (may also be expressed
         in textual format).