Lantronix X-Port problems & serial to ethernet servers

Oct 25, 2003 1 Replies

Hi All,



Back in April this year there was a few posts to this group about the new embedded x-port server from Lantronix.



I am interested in how many people are using these little devices and are writing Java Applets for them? I am a little concerned about the lack of security on these devices, as anyone on the network can just write data to the ports to control the IO pins and serial link.



I have brought myself two of the XPort samples, but have been having trouble getting the 'Environmental Control Sample Solution' running. I have to assume someone has this working fine and that I am doing something wrong?



My problem is with getting the Java Applet running (thermostat.java). I can upload the two pre complied cob files (from the CD) to the Xport fine however when I try to open the page http://xx.xx.xx.xx/thermostat.html I just get the applet outline and after about 10 seconds a blank page with nothing else. I can download the thermostat.gif and thermostat.html etc, so i know the cob files are getting uploaded correctly, just the applet does not run.



I have got the GPIO example from Lantronix and have now modified it and uploaded it fine so I know that some java applets work fine. After all the thermostat is the only one I can't get working!



Any ideas?



I have emailed tech support and found this to be not that helpful.



What are designers using their Xports for? I wish to use them for controlling rs232 projects over the network. I was hoping to just add the Xport, but have found now that I need to add some password protection on the RS232 link side as the Xport has just about none. Anyone can write data to any port!!



Having a serial port that can only go upto 230Kbs is a little limiting as well. Would have been nice to have a SPI port or even the ProFibus connected to the outside world. The ProFiBus was 12Mbps!!



Regards Wayne Peacock _____________________________________________________________________ Embedtronics

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Embedded Ethernet, Data & GPS Logging Systems, Nokia F-Bus Interfacing AVR Microcontroller Designs, MP3 Players.



Email: snipped-for-privacy@embedtronics.com _____________________________________________________________________


I'm using the XPort to network enable some old designs mainly using just the serial to network features. The web server adds a few handy things so that people can review the state of the machine without having to load the system software. I found that users usually needed to download the Sun JRE because the Microsoft one didn't always work.

Peter

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