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Loxone Support Community › Category: General › Modbus, some statrup difficulties.
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2 years ago
Modbus, some statrup difficulties.

Anyone familiar with the energy meters from IME Conto D4-Pd, that can share some advice.
I cant see any template avilable, so it looks like ill need to set it up from scratch..
On top Im new to modbus so my first problem is that i cant figure out how to identify IO- adress and correct datatype.

modbus register: https://www.imeitaly.com/wp-content/uploads/technical-sheets/IDP000385.pdf

Any advice is appreciated.

2 Answers
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2 years ago

Hi

On your manual at the bottom of each page is a reference to the M-Bus specification. This implies that either the manual is the wrong one, or that your meter is M-Bus not Modbus.

A bit of detail of the differences can be seen here.

I would recommend contacting the manufacturer for clarification on whether the meter is Modbus compatible and then if so for their Modbus communication guide.

KR

Hugh

0 Vote Up Vote Down
2 years ago

To follow up, a quick Google search yields the following document which looks much more like what we are looking for https://www.imesys.fr/protocole-pdf/PR102.pdf

The addresses are still in hex format so use a hex to decimal converter i.e. https://www.rapidtables.com/convert/number/hex-to-decimal.html

So for instance Phase 1 Voltage is IO 0x1000, so we would ignore the 0x and put the 1000 into a hex to dec converter to get the decimal number 4096.

Our Input in config will then likely have the IO address 4096 (there might be an offset of +/- 1). This register is also specified as UD_WORD which looks like it means it is two words or two registers so you would then select it as 32 bit, the U means unsigned so the data type should be 32-bit unsigned integer.

Then finally is the command type. In the document it has for commands reading one or more consecutive words as command 0x03 which means Function Code 3 or Read Holding Registers.

KR

Hugh

2 years ago

16-bit register may also need to be ticked but at this point it is trial and error on a single register you know the value of

2 years ago

Thank you so much! Highly appreciated. Hopefully ill be able to test some more later today.

KR
Rune.