modbus energy meter - Printable Version

modbus energy meter - Printable Version

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modbus energy meter - mariosp - 03.01.2025

Hello guys!
Its my first that i integrate with modbus.

Im using an energy meter from legrand ( EMDX3) and i dont receive measurments and when i check the error logs i get this
read failed :Illegal function.
Does ever this happend to anyone else ?
Here is my profile for the device that i builded

RE: modbus energy meter - Daniel - 03.01.2025

You are missing datatype - this will be defined in device manuals. Before making profile use Read test to find correct configuration.

RE: modbus energy meter - mariosp - 03.01.2025

(03.01.2025, 10:29)Daniel Wrote: You are missing datatype - this will be defined in device manuals. Before making profile use Read test to find correct configuration.

When i try to do it i get Illegal fuction and illegal data value

RE: modbus energy meter - Daniel - 03.01.2025

Do you have manuals with registry definition?

RE: modbus energy meter - mariosp - 03.01.2025

(03.01.2025, 11:09)Daniel Wrote: Do you have manuals with registry definition?

yes , here it is

RE: modbus energy meter - Daniel - 03.01.2025

You have registers, not inputregisters. Try also subtracting register address by 1

RE: modbus energy meter - mariosp - 03.01.2025

(03.01.2025, 11:22)Daniel Wrote: You have registers, not inputregisters. Try also subtracting register address by 1

I tried Both but unfortunately doesnt work

RE: modbus energy meter - admin - 03.01.2025

Try running Read test with the following parameters and post the results.

- Function: Input register (#4)
- Address: 4096
- Data type: uint32
- Read swap: Word (CDAB)

Also try Function = Holding register (#3)

RE: modbus energy meter - mariosp - 03.01.2025

(03.01.2025, 12:21)admin Wrote: Try running Read test with the following parameters and post the results.

- Function: Input register (#4)
- Address: 4096
- Data type: uint32
- Read swap: Word (CDAB)

Also try Function = Holding register (#3)

With holding register i get the volts.. but i dont get the value in the group address.

RE: modbus energy meter - Daniel - 03.01.2025

Try this

Code:
"address": 4096,

"name": "Voltage L1",

"bus_datatype": "float32",

"type": "register",

"units": "V",

"description": "Voltage of phase L1",

"datatype": "uint32",

"value_multiplier": 0.001

RE: modbus energy meter - mariosp - 03.01.2025

(03.01.2025, 14:18)Daniel Wrote: Try this

Code:
"address": 4096, "name": "Voltage L1", "bus_datatype": "float32", "type": "register", "units": "V", "description": "Voltage of phase L1", "datatype": "uint32", "value_multiplier": 0.001

it worked, i will do it for all and i will update you

(03.01.2025, 14:18)Daniel Wrote: Try this

Code:
"address": 4096, "name": "Voltage L1", "bus_datatype": "float32", "type": "register", "units": "V", "description": "Voltage of phase L1", "datatype": "uint32", "value_multiplier": 0.001

it worked, i will do it for all and i will update you

RE: modbus energy meter - mariosp - 04.01.2025

It works perfecty!!!
Thank you gus i will add the profile so if anynone need it to be ready!!