Map ModbusTCP data to assets

I figured this out. The Tag under the Property Group is the alias for the asset measurement. There is no hierarchy.

I had tried this earlier but it didn't work due to a security issue. There is a periodic log entry in swPublisher.log.

[2021-03-31T21:57:14.687-05:00][INFO]-2021-03-31 21:57:14 INFO BufferedMetricsPublisher:90 - Emitting diagnostic name=PublishError.AccessDeniedException, value=6, timestamp=2021-04-01T02:57:14.658Z, dimen.....

Apparently if "value" in the log entry is not zero then there is an AccessDeniedException somewhere.