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IEC 62657 2 2013 specifies the fundamental assumptions concepts parameters and procedure for wireless communication coexistence provides guidelines requirements and best practices for wireless communication s availability and performance in an industrial automation plant it covers the life cycle of wireless communication coexistence and provides a common point of reference for wireless communication coexistence for industrial automation sites as a homogeneous guideline to help the users assess and gauge their plant efforts This first edition cancels and replaces IEC TS 62657 2 published in 2011 The main changes with respect to the TS are br updated the normative references terms definitions symbols abbreviations br corrected spelling br changed figures to make them consistent with the text and vice versa br added and modified text to make the text more readable