FOUNDATION fieldbus was developed over a period of many years by the International Society of Automation, or ISA, as SP50.
Many ISA standards have also gone to be adopted as international (International Electrotechnical Commission (IEC) standards as well.
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This standard was approved by the International Electrotechnical Commission (IEC) as a publicly available specification, or PAS in September 2011.
In the late 1980s the ISA (International Society of Automation) began an effort to develop a set of standards for the Batch Control Industry with the intent of providing improved system performance and programming efficiencies by way of a standard set of models and procedures.
The International Society of Automation (ISA) started formalizing SCADA security requirements in 2007 with a working group, WG4.
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