We use both Moxa and various Lantronix devices throughout our plants for serial to IP conversion.
We have firmware for some of the Lantronix devices which translates RS485 Modbus into Modbus/TCP. Very convenient.
I have an old Lantronix device on my workbench right now that I'm fooling with, trying to write a Program Object in Niagara AX to accept the connection from the device and parse the data as it comes in. Anyone have any sample code for me?
I have used lantronix to transmit Rnet local access across the internet with SiteScan Web (WebCTRL). We were downloading memory to modules remotely. It was a short run project but seemed to work fine and wasn't a big deal to set up.