How to send Modbus RTU RS485 messages from Teltonika FMC640?

Teltonika Telematics
1

Hi,

How can I send Modbus RTU RS485 messages from Teltonika FMC640 to server?

Thank you!

2

Hi,

Good day, kindly check our wiki page for Modbus integration : Modbus slave integration with FMX125/FMX640 - Wiki Knowledge Base | Teltonika GPS (teltonika-gps.com)

Best Regards,

3

I do have two more question:

  1. Is it possible to configure FMC640 to send a modbus command every X ms save the coil value in memory and then send th value as a record?
  2. Can we implement this logic by ourselves? (I don’t know what’s the procedure on getting access to the source code so we can build our own firmware)

Thank you very much for your prompt response.