S7-300 send data to PC with Ignition/OPC-UA

RicoCh · February 20, 2013, 4:40pm

thanks both for your help,
yes Chi, I totaly agree cause Siemens OPC server uses XDBs to resolve symbols names

and to answer you Kevin, I totally agree with you on namespace index (1) and NodeId format string.

I think the problem I encounter is with the "Simple OPC UA client " from Siemens in which i don’t see how to formalise this namespace index.
when I use Siemens’s OPCUA the correct string is “S7:”, yet I can’t find the corresponding one for the ignition server
(yes , the name given here - LiaisonOPCUA_S300) is the one of the S7 connection bewteen the PLC and the OPCUA server and should not be used in the [S300]address string )

I’m about to going back to Prosys Sample Client … and try to find the correct method to send my “ns=1, NodeId” reference string
keep in touch then
Eric