/dev/rs232 missing

Networking Solutions
1

Hi,

I’ve been playing with a rut956 and serial modbus over rs232 and rs485. Everything was working fine until I tried to upgrade and downgrade between version 7.15 and 7.14.

Rs485 is fine but rs232 won’t work and when I use the console there isn’t a /dev/rs232 just /dev/rs485. Any suggestions?

I’ve tried factory reset with no luck.

Best regards Peter

3

Good afternoon,

Can you confirm whether you are currently checking with the newest RUT9M_R_00.07.15_WEBUI.bin firmware.

Can you also please send a screenshot where you are supposed to see rs232 functionality, and it is not there?

Regards,
Arturas

4

Hi Arturas,

Thank you for answering. The web ui just reports an error like ‘check configuration’. It is when I use the CLI I can see that the link for /dev/rs232 is missing.

However, I’ve managed to downgrade to 7.14.3 and fixing the issue, following the steps

  • Downgrade using a file to 7.14.3
  • Make the same configuration as before
  • Create the link manually for /dev/rs232 as root using
  • ln -s /dev/ttyUSB0 /dev/rs232
  • chown -h root:dialout /dev/rs232
  • Reboot the RUT956

But I would really like to know if there is an issue with firmware 7.15 and Modbus Serial on RS232 on RUT956 because it takes a couple of hours to update and revert.

Regards Peter

5

Hi there,

Can you please send us a screenshot of the configuration and the issue, with the newest (7.15) firmware?

Regards,
Arturas

6

Hi Arturas,

I’m sorry but I’ve spent the last 2 days resolving this issue and I can’t use more time. Trying to upgrade again will take at least 2 hours if it fails. I’ll just stay at 7.14.3

Best regards Peter

7

Hi there,

I have sent you a form for private communication, please fill in the form, and in ticket ID provide this query ID which is 14145.

Regards,
Arturas

8

Hi,

Thanks, I’ve submitted the form.

Best regards Peter

9

Hi there,

Our RnD department have informed me that a fix for this issue should have gone out with 7.16.1 Firmware. Please upgrade your device, and advise us if you still need assistance.

Regards,
Arturas

Data to Server on Modbus stopped working
10

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12

Hi Arturas,

Thanks, I’ve updated and everything seems to work. The only issue I found was that the ‘admin’ user had SSH access disabled after update.

Regards Peter

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13

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