EHS5-E: Suddenly no response from RS232 line. | Thales IoT Developer Community
February 1, 2017 - 4:20pm, 4459 views
I have the problem here, that I suddenly receive no response from the Module.
I send an SMS over Serial RS232 with the following AT commands:
Module: +CREG: 0,1 OK
PC: 1234 #000<CTRL-Z>
Module: <CR><LF>+CMGS: 232<CR><LF><CR><LF>OK<CR><LF>
Then, 5s later, I send again the exact message, and I get immediately after the Prompt > an Error from the Module:
Module: <CR><LF>> <CR><LF>ERROR<CR><LF>
Module: <CR><LF>+CMGS: 233<CR><LF>
The Response +CMGS: 233 is the last signal from the Module, after this, it's not responding anymore to AT-Commands. I have to restart the Module to get it working again.
We use this modules in a few installations with exactly the same software who talks to the module, but only on on this system we have this problems.
- Firmware is the same like on the other working modules
- Module already changed
- Serial-Port on the PC changed
What could produce this issue? Can I read somewhere a diagnostic log?
Any help would be appreciated.