Labview - 3504 modbus-TCP communication procedure

Can anyone sort of walk me through the way of setting up the communication between labview and a 3504 module, with the modbus-TCP card by any chance.
I have the full development system version of labview and I do not have access to the NI OPC server toolkit.

I have the et3504 drivers but cannot suceed to communicate with the 3504 with them.

I followed this procedure, but cannot find a way of registering the opc modbus server.

Any idea?
Thanks in advance,
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