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Forum Index : Microcontroller and PC projects : USR-TCP232-T2 Network module help...

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Grogster

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Joined: 31/12/2012
Location: New Zealand
Posts: 9755
Posted: 06:57am 14 Apr 2021
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One of these arrived today, so I thought I would have a play around, but I cannot talk to the thing at all.  I think it is cos it is in another network from my LAN...

According to the manual, its default IP address is 192.168.0.7
ALL my PC's on my LAN are in the 192.168.1.x range, with subnet mask of 255.255.255.0, so I think that is where the issue is.

QUESTION: If my machines are in 192.168.1.X, should I still be able to see and talk to other machines in the 192.168.0.X range, or are they essentially blocked?

Advanced IP Scanner cannot see the module at all, PING at command-prompt can't see it either.

EDIT: It's definitely alive and detectable:





...but I can't PING it, and I can't talk to it via a browser.  The module has a built-in web-server for configuration which is what I am trying to use, but I could just use this for configuration I guess....

I will probably want it in the same LAN anyway, so I might change its IP address now to 192.168.1.X, and then see if I can PING it and/or load up the web-interface.
Edited 2021-04-14 17:11 by Grogster
Smoke makes things work. When the smoke gets out, it stops!
 
matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10600
Posted: 07:09am 14 Apr 2021
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Can't exactly remember, but I think you need to connect to a serial adapter, tie the CFG pin as required and then run the configuration program. Then you can set the adapter to your network.
 
Grogster

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Joined: 31/12/2012
Location: New Zealand
Posts: 9755
Posted: 07:25am 14 Apr 2021
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Yep, all up and running now that I put it in the same LAN:





Set the module to 192.168.1.7, and then I can PING it, AND talk to it via the web-interface.

This is nice little module!!!!  
Smoke makes things work. When the smoke gets out, it stops!
 
Zonker

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Joined: 18/08/2012
Location: United States
Posts: 772
Posted: 12:00pm 14 Apr 2021
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Awesome Grogs..!  I just got around to ordering one also...  
I want to use it to look at data packet's from a PC app we have here at work...
 
Grogster

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Joined: 31/12/2012
Location: New Zealand
Posts: 9755
Posted: 11:58pm 14 Apr 2021
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The next step will be to configure for 38k4, and connect it to a spare MM2 chip and play with accessing the MM console via the LAN for a start, then I might run another of those tests where I setup port-forwarding on my router and see if other members can talk to it from the WAN.

The 192.168.0.x range that it is in by default, is a bit of a gotcha, as 99% of the world that uses the private non-routable range starting with 192.168, tends to be 192.168.1.x, and that most certainly stopped me from doing a PING test or being able to talk to its web-configuration.

Sure, 192.168.0.x is a range I have come across on people's LAN too, but 192.168.1.x is far more popular and common.  No matter.  It was easy to change.

These things are less then HALF the price of the WizNet ones I used before, are physically smaller, and the web-based configuration is a brilliant thing to have.  WizNet module did not have that and the config software was not as good as this one either.  Not to speak ill of the WizNet module.  It did it's job once configured, but this is much easier to work with, once you get it set in the correct LAN range!    
Smoke makes things work. When the smoke gets out, it stops!
 
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