Wonderware Codesys OI Server connection to PM573E

I am attempting to use the WW OI Core Codesys driver to connect to an Intouch application. However, I seem to be having problems achieving communications.

I have achieved comms using the Modbus TCP DA server from Intouch, but there appears to be some differences in how floating point / real data is interpreted between the PM573E and the DA server.

Has anyone tried this before?

Thanks