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Modbus addresses for Shelly pro EM 50


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I can connect to my shelly using access point, and I can read 

http://192.168.33.1/rpc/Modbus.GetConfig?

{"enable":true}

 

If I try to connect using modbus using modbus_cli as described I always have "Invalid address" from the software 

I tried  many addresses from https://shelly-api-docs.shelly.cloud/gen2/ComponentsAndServices/EM/#modbus-registers or https://shelly-api-docs.shelly.cloud/gen2/ComponentsAndServices/EMData/#modbus-registers but always with the same result

modbus -B mixed 192.168.33.1:502 i@1020/f -v
Parsed 0 registers definitions from 1 files
→ < ff 15 00 00 00 06 ff 04 03 fc 00 02 >
← < ff 15 00 00 00 03 ff 84 02 > 9 bytes
1020: Invalid address
modbus -B mixed 192.168.33.1:502 i@31020/f -v
Parsed 0 registers definitions from 1 files
→ < 4a 3e 00 00 00 06 ff 04 79 2c 00 02 >
← < 4a 3e 00 00 00 03 ff 84 02 > 9 bytes
31020: Invalid address
modbus -B mixed 192.168.33.1:502 h@1020/f -v
Parsed 0 registers definitions from 1 files
→ < 0e e5 00 00 00 06 ff 03 03 fc 00 02 >
← < 0e e5 00 00 00 03 ff 83 02 > 9 bytes
1020: Invalid address

What should I do?

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