Add a feature to map aliases of OPC UA node like /Channel/Parameter/rpa[u1,20]

Hello Dev team,

We are trying to get data from Siemens OPC UA server which is provided by SINMUMERIK. SINNUMEIRK has a lot of machine data like R variables and Axis’s Load.

UaExpert which is a very popular opc ua client, can access the aliases like /Channel/Parameter/rpa[u1,3] or /Channel/Parameter/rpa[u1,20].

However, we can only access and map /Channel/Parameter/rpa via Tulip. We cannot find and specify /Channel/Parameter/rpa[u1,20] from OPC UA’s object tree of Tulip.

Could you please add a feature to map such aliases of OPC UA?

Kind Regards,

Hey @Akira -

Siemens PLC Servers (especially the S7 variety) extend the OPC UA spec with datatypes that Tulip does not support today. Source

The supported types are called out here:

When showing notes in Tulip, we only show nodes that can be mapped to Tulip types, so these unsupported types are not shown. Generally, customers work around this by having something like Kepware sitting between PLCs and Tulip, to normalize all data to the base list of supported types.

Hope this guidance helps-
Pete

Hello @Pete_Hartnett

Thank you for your information. I understood the support types of OPC UA Data Types. I also understand that Kepware can do it instead of Tulip.

The types of values that we woule like to get are Text or Number. I would like to have a way to map those nodes Tulip can’t find and map nodes at this moment.

Kind Regards,
Akira Takahashi