USR-TCP232-302 Tiny Size RS232 to TCP IP Converter Serial RS232 to Ethernet Server Module Ethernet Converter Support DHCP/DNS

If you need a cheap way to send serial command over IP, then this works great. It's built well, can act as either a server or a client, and works with Bitfocus Companion if you need that!

Perfect for accessing a serial port, over the internet, on your PC. I use the old Hyper Terminal program from the Windows XP days as it still works on newer operating systems. But there are other ways to access as well.

Some difficult to install

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Bought this in an effort to get a serial label printer running on an Ethernet network (Needed to replace the one that is there and damaged). I got it, download the manual, read through the how to get connected to it and used a spare laptop to connect to the built in web page. Great.Configured it for my specs, confirmed it was configured correctly, disconnected it and walked it to the location. Plugged it in and pinged the IP. Could see it just fine. Sent a print job and nothing so I assumed I didn't set the serial side properly. Tried to log into the web page, with the current IP, and it was unreachable. Pinged it and it responded. Tried the web page again and nothing. One last ping and it stopped responding after the second one. Tried pinging repeatedly and nothing.Took it back to my desk and hooked it up and got nothing. Used the reset button and was finally able to access it via the set up software. Am able to configure it but still can't get the web interface to load. I have been working on it for the last 2+ hours and nothing.This thing is the trash I deserve for paying $30 for it. This is going back and I can assure you, this company will not ever get another dime from me.

Got this to work with an ALLEN BRADLEY SLC 5/04 PLC processor. Had to take it out of it's metal case because I did not have a Male to Female DB9 cable at the time. At first it wouldn't work because I had a null modem adapter between the usr and processor. The pinout in the manual for the usr led me to believe that i needed to flip flop the Rx & Tx lines. But after removing the null adapter, it worked. So either it was wrong, or the pinout for my PLC was wrong. I got it setup up on a static IP on my home network and can access it anywhere with anything (including VNC'ing into my server with a smartphone from work. I was able to go online with the PLC from 3 different computers at the same time even. It did take some time setting up the serial comms options so it's not a "Pull it out of the box, plug it in and it works" thing. If baud rate, parity, RTS, DF1, CRC, or packet size are foreign words to you, buy this at your own risk. Or actually, do buy it. If you don't know anything about how RS232 comms work, this would be a great learning tool. If it works on ALLEN BRADLEY'S proprietary DF1 protocol (which this thing does not know what that is and nothing else on this planet uses it), then it will work on anything.

I got no response from my Agilent 34401A DMM. A Gearmo RS232 to USB worked for me.I never get RS232 to Ethernet devices to work - a general statement.

My application was controlling an RS 232 HP 34970 data acquisition unit via ethernet. While I did get it to work, it never did yield a reliable connection. Perhaps I didn’t configure the software settings properly or maybe the hardware was defective. The documentation is difficult to follow, which is primarily due to the Chinese to English translation. Anyway, I ended up abandoning trying to make this work.