I need to send commands back to SCADA (via OPC), looking some documentation on that topic, but cannot find anything, could you direct me to the correct place?
Look at PI Output tags...
PI Interface for OPC DA supports writing to OPC Items. The key to look for in the manual is "OPC output tags". Please note that PI Interface for OPC DA is not included with your vCampus development PI System. The license file of your vCampus PI Server will not allow PI Interface for OPC DA to connect. Please also refer to vCampus General FAQ page. However, using PI OPC DA Interface would be the # 1 recommendation to write from a productive PI System to an OPC Server.
If you are planning to develop your own application using OPC as a Data Access method, please visit PI OPC Development forum.
Thank you Gregor and Gopal, that is very useful information
Retrieving data ...