Hi Neil- I suggest that you contact OSIsoft Tech Support. They will be able to help you pretty quickly with this issue.
error 10758 means you cannot have a SDK connection to PI server, please check something:
1. make sure PI server has given a trust to PI AF server
2. make sure PI server has given a trust to PI CoreSight server
Tom's suggestion is right, as OSIsoft Tech Support team is the expert team to solve the problem on what error occurs when you using PI server.
Thanks for the response, i kinda thought that this is a place of sharing problems, but since it serves a more general discussion purpose - my apologies.
I'll try to ask the same question then in more general way:
When coresight is queries AF for values that has a PI point assigned to it, does the pi server or AF return that value to coresight ? I mean does AF redirect coresight to PI to get that SINUSOID value for example ?
yes, AF SDK will transfer the PI CoreSight link to PI server, and get the value from PI server directly.