S2E Modbus Bridge (SPMA037) can not connect

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Posted by chao wang

on Mar 06 2012 21:38 PM

Hi!!!,

Has anybody ever used the Modbus Bridge (SPMA037) applications? I have some issues about this application and hope someone can help me!

Here is the thing:

I'm using S2E Module reference design kit(LM3S6432), and I want to add the functionality of converting Modbus TCP packets into Modbus Serial packets on the MDL-S2E.

First, when I load the S2E program, everything is OK, I can use the finder.exe to find the Module's IP address, and use the telnet protocol to communicate with the S2E module.

but when I load the Modbus Bridge(SPMA037) program, the finder.exe can not find the Module's IP address, and I have done all this according to the Application Report provided by TI, and I also asked the FAE of distributor (later asked the TI's FAE), but seems like they have no experience in this application. Following is the Modbus Bridge(SPMA037) application link:

http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=spma037&fileType=pdf

http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=spma037&fileType=zip

Currently I highly doubt that it's the program problem, but it's improbable that TI release the incorrect program, also there's no update for this program since its release.

Hope someone can help me, thanks!

All Replies

Posted by Sm Narayanan

on Apr 09 2012 06:53 AM

Intellectual2590 points

Hi Chao,

One of main difference between Modbus bridge and S2E application is the presence of Ethernet bootloader. In the S2E application, we used to program application at 0x1000 address. In case of Modbus Bridge application, we need to program the application at 0x0 address.

Try to reflash the ModbusBridge binary at 0x0 and try the same.

if any issues, let me know.

Regards

Narayanan