Port 5002 can be used for sending ASCII to the IPA:
Then the connection is made and its very similar to the terminal emulator in ACR-View.
Note if ACR-View is connected that connection will always be STREAM1 so the next available stream will be used.
Here's it's connecting on STREAM2.
Note that Ethernet/IP communications does not consume a STREAM and that 4 simultaneous connections to the IPA are available.
Here shows sending a P100 parameter.
? is shorthand for print for querying the value:
Note above shows using HyperTerminal. Other terminal emulator programs such as Putty can also be used.
Full Ethernet specifications are available in the user guide under ACR9000 here.
Examples using LabView, VisualBasic, C++, C# with the comACRserver are available here.