meter reading iskra mt831

Hi, I'm
realizing an iot project with node-red, we should read the mt831 iskra counter, the counters mount the MK-f38-3 module, it has an rs485 port with IEC 62056-21 communication protocol. How can I take these readings?
thank you so much

I don't know that device but a quick search suggests it supports modbus protocol.

Install modbus nodes, connect to the device, read the desired addresses.

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