I am using the OPC com module to read data from a wind turbine. Items like Frequency and kW have the data type of double in the OPC server and Float8 in Ignition. Is there a way to convert those data types to a Float4 since they will never utilize the full range of a Float8? I also, use the OPCCom Tunneller to serve the data out to OPC UA clients that use the data to build DNP maps. I believe, if possible, it would be easier to modify the data on the Ignition end than on the end user side. Cannot use any data types larger than 32 bits.
Did you try to set the OPC tag's type to Float4?
Do you mean the OPC-DA server onsite? I do not have access to that.
No, the Igntion tag's data type. It doesn't have to match the source value type from OPC. Ignition will try to coerce to the target type. (Though I haven't tested coercion from float8 to float4, I'd be surprised if it couldn't.)
I have changed it on the Ignition side and I am trying to see if reflects at the OPC-UA Client. I will post the results in a few.
There’s no reason to modify the DataType on the Ignition side if you can’t change the server side.
It allowed me to change the data type but it does not carry through to the Client.
That is what I saw when I tried to change it. It did not carry through to the OPC-UA Client.