Difference between Attributes named "hidden" and "retain hidden"
What is the difference between "Attributes" named "hidden" and "retain hidden"?
I understand that "hidden" attributes will be having same characteristics as "retain", but only difference in "hidden" attributes variable is that it will be hidden for an OPC.
If so, what is "retain hidden" attributes for...?
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'Hidden' attribute will do the value wont be avlaible for OPC. And the value of variable will not be retained for warm,cold,init downloads. So when you do any download the value will go to its initial value and while executing programme it will get the value from code.
'Retain' attribute will do the value be will retained for warm download. It wont retain the value for cold download as well as for init download.
'retain hidden' attribute will retain the value for warm download and it will hide the value for OPC.
'hidden' will be used for reducing OPC communication from connectivity servers.