Covers Standards (and the organisations that promote them) for all levels and applications of control engineering.

• IEC (International Electrotechnical Commission) Issues many of the relevant Intenational Standards.

• IEC 6 1131-part 3 "PLC-Programming languages"
  • PLCopen Gives a good overview of this standard, including benefits of using this Standard and areas for further information.
  • Allen Bradley ftp server This is where the IEC working groups exchange their ideas.
• IEC 848 "Sequential Function Charts"
• IEC 61499
• ANSI/ISA S5.1 "Instrumentation Symbols and Identification" Covers P&ID naming conventions etc.

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