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11973 questions

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Hello,

is it possible to use the rut955 as a Modbus TCP gateway. I have several Modbus RTU devices connected via RS485 to the Rut955. I would like to read out values from these RTU devices from my remote SCADA system.

I´ve just found an option to send the data via JSON File. This would be a push method.

Reading out the Rut955 via Modbus seems to be possible just for Router parameters, but not for connected slaves.

Greetings Chris
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Hello, it's possible but be carefull, modbus deamon can crash randomly after a reboot of RUT :
See https://community.teltonika-networks.com/18434/rut955-rs485-modbus-gateway-crash-after-reboot?show=18434#q18434

3 Answers

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  • Set the port as Modbus Gateway on your rut (Example: LAN IP 192.168.1.1).
  • Ensure that all the RTU devices have unique ID (Address)
  • Request connection to 192.168.1.1 with the device ID for the address.
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Hi!

Yes, it's possible. In Services - RS232/RS485 section you can configure the Modbus Gateway.
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Thank you.

I will try it and come back with results. Also the rebooting issue is good to know about.

Greetings Chris