The Organization for Machine Automation and Control (OMAC) is a global organization that supports the machine automation and operational needs of manufacturing.

[1] OMAC, has in conjunction with ISA, created the PackML industry standard for describing the state and transitions of packaging machines.

[2][3][4][5][6] OMAC was formed by General Motors in the 1980s under the name Open Modular Architecture Controls to address the problem of each machine having different controls and/or software implementations.

[7] In the late 1990s OMAC expanded into the packaging automation industry.

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