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How to connect the RS485 (4 wirings) from TRB255 to a modbus device RS485 (2 wirings)? - Crowd Support Forum | Teltonika Networks

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How to connect the RS485 (4 wirings) from TRB255 to a modbus device RS485 (2 wirings)?

asked Feb 22, 2021 by anonymous

Dear all,

I use the TRB255 in Modbus serial connection. On the TRB I have 4wirings (R+ R- D+ D-). I try to connect it on a Modbus Device in RS485. On this device I have 2wirings +/ -/ GND.

How can I found the right connection?

Best Regards.

Many thanks.

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How to connect the RS485 (4 wirings) from TRB255 to a modbus device RS485 (2 wirings)?

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