I have been asked if there is a standard, or comments within s standard, that 
discusses giving a customer the password to allow them to reprogram the PLC 
when they remove a device and the light curtain that protected it.I believe, 
that other than it being a terrible idea, that it would probably invalidate any 
approvals the end product had.The customer is asking for a document that 
supports my opinion.I dud suggest that we send a service person to do the 
change, and not give up the pw.Thoughts?Sent from my T-Mobile 5G Device

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