IP Parameters, Encapuled or Not? Role of transaction ID?

[fabou3377]

Hi,

I just want understand what's the difference of the field encapsulated of IpParameters

Here the source code

  // Wrap the modbus request in a ip request.
        OutgoingRequestMessage ipRequest;
        if (ipParameters.isEncapsulated())
            ipRequest = new EncapMessageRequest(request);
        else
            ipRequest = new XaMessageRequest(request, getNextTransactionId());

I work with a plc wago with the UdpMaster.

Thanks