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0 votes
518 views 6 comments
by anonymous

I have a simply application. TRB145 is a gateway between Modbus TCP client(Master) and RS485 RTU device(Slave). The problem is that frame received from client is send to the slave device, slave is making correct response, but the response is not send back to the TCP Client. Below is a communication diagram:

Here is the configuration of RS485:

Firmware: TRB1_R_00.07.00.1_WEBUI

In the attachement backup configuration of teltonika (admin password is: Zapsoft1)
and modbus log from Modbus Poll (TCP Client) and Modbus Slave (RTU).

Is there any way to log communication on RS485 (in Teltonika)?

3 Answers

0 votes
by anonymous
Please let me know if it is a hardware problem or a configuration issue.
0 votes
by anonymous

Hello, dareksm,

Thank you for contacting us.
In order to avoid any misunderstanding, I would like to ask I understand correctly: is TRB145 are a gateway and device behind it is a slave?
Also, I would like to ask to generate a troubleshoot or a backup in order to check configuration and what cause the issue.
At the moment, I could not see any added attachment with this post.

Best regards,

Sigitas

by anonymous
Hello Sigitas,

I have the exact same issue with the TRB245 gateway. Please let me know how to solve this ASAP.

br,

Bayasgalan,
by anonymous

Hello, Bayasgalan,

I would like to ask, have you tried to check you computer firewall inbound rules?
Also, have you tried to check if issue persist on different Modbus Master software, like qModMaster or Modbus RTU/TCP tester?
In case issue persist, please generate and provide a troubleshoot file.
Detailed instruction could be found in our wiki page.
Thank you in advance.

Best regards,

Sigitas

0 votes
by anonymous
That's correct - TRB145 is a gateway and device behind it is a slave.
I resent attachments to the google drive:
https://drive.google.com/drive/folders/1kjk1erCxbCn5NJqLRBIxX5ChZo7nxOw_?usp=sharing
by anonymous
Hello,

Thank you. I will check them and inform you directly with private message.

Best regards,

Sigitas
by anonymous
I'm still waiting for the answer...
by anonymous
Hello,

Please check your message inbox.

Best regards,

Sigitas
by anonymous
Dear Sirs ,

Did you find any solution to this ? ~
Thanks