Modbus profile builder

I'm trying to find out what is the easiest way to build a modbus profile to upload to SHAC.
I have the SMA inverter register documentation but am trying to find a simple program to help with building this profile so I can upload and start communicating with inverter to increase self consumption of energy during the day.
I know I've got to build an XML file but surely there is a easy way since this modbus has been around for such a long time.
Ash

 

SHAC Modbus profiles are in .json format, not xml.
Eaisest way is to download one from the SHAC, and open it with a txt editor, notepad++ or similar, have a poke around and duplicate, then upload to the shac.

There is a Schneider white paper somewhere on what is required, eg some parameters in the json are required like name, type etc etc.

I would start off with a manual read test on the modbus to see if you have connectivity and the expected value received from the modbus register you interrogated.
sometimes the registers are out by 1.

Once you have that then look at making a small profile
With say 1or 2 registers then test that for poc before going all out.

 

Have a look over at the Logic Machine forum for some more examples

https://forum.logicmachine.net/showthread.php?tid=2124

 

Thank you both very much for your information, The battery inverters don't run/manage modbus protocol directly but communicate via a proprietary sma com1 communication, fortunately a (SMA data manager) converts comms into modbus protocol but is a master/client and now my dilemma is trying to read data between SMA modbus master and SHAC modbus master.
I had previously read the logicmachine thread that you have linked to.
Ash

 

What other options for integration dose SMA power manager have? Ethernet http api?

 

Success, I've managed to make contact with the battery inverter.
I have been profile building and have managed to make probably 30 or more profiles to try every combination.
I've managed to poll (battery SOC) and i am over the moon about this.
Under "mapping parameters" in the modbus section of the SHAC manual it states a minimum of 4 parameters to build a modbus profile.

"Name" (This can be any nominated descriptive name)
"Bus_Datatype" (seems like unless its "float32" once loaded i cant allocate to a group)
"Type" (Register type)
"Address" (Register address)

I'm trying to poll 2 more registers 30849 "Battery Temp" 30851 "Battery Voltage" and for some reason I cant quite get the configuration correct.

Does anyone have more info on "Bus Datatypes" that are acceptable configurations?
Pie Boy thank you so much with your help in learning how to build the profiles, without you i wouldn't of just had the biggest boost in believing this will all be worth the time and effort.

 

In the SHAC manual there is a good section on modbus. Including mapping and data types This helped me generate a json for Stiebel Eltron Heat Pump.

The "bus_datatype" has the same options as "datatype" in the table below.

Weirdly Schneiders info below helped me out around datatypes
https://www.productinfo.schneider-electric.com/powertaglinkuserguide/powertag-link-user-guide/English/BM_PowerTag Link D User Manual_4af62430_T000501355.xml/$/TPC_ModbusTableFormatandDataTypes_4af62430_T000501590

Did find that if I want to read bits I would import the register in floating point and then do a bit of Lua Scripting to get what I want and output descriptive text. Example below:

Code:

status = event.getvalue()


if bit.band(status, 1) ~= 0 then
  Bit0 = "HC1 pump on, "
  else
  Bit0 = ""
end

if bit.band (status, 2) ~= 0 then
    Bit1 = "HC2 pump on, "
  else
  Bit1 = ""
end

if bit.band (status, 4) ~= 0 then
    Bit2 = "Heat up Program, "
  else
  Bit2 = ""
end
if bit.band (status, 8) ~= 0 then
  Bit3 = "NHZ stages running, "
  else
  Bit3 = ""
end
if bit.band (status, 16) ~= 0 then
    Bit4 = "Heat Pump in Heating mode, "
  else
  Bit4 = ""
end
if bit.band (status, 32) ~= 0 then
    Bit5 = "Heat Pump in DHW mode, "
  else
  Bit5 = ""
end
if bit.band (status, 64) ~= 0 then
    Bit6 = "Compressor Running, "
  else
  Bit6 = ""
end
if bit.band (status, 128) ~= 0 then
    Bit7 = "Summer Mode Active, "
  else
  Bit7 = ""
end
if bit.band (status, 256) ~= 0 then
    Bit8 = "Cooling Mode Active, "
  else
  Bit8 = ""
end
if bit.band (status, 512) ~= 0 then
    Bit9 = "Min one IWS in defrost mode, "
  else
  Bit9 = ""
end
if bit.band (status, 1024) ~= 0 then
    Bit10 = "Silent mode 1 Active, "
  else
  Bit10 = ""
end
if bit.band (status, 2048) ~= 0 then
    Bit11 = "Silent mode 2 Active, "
  else
  Bit11 = ""
end

output = table.concat({Bit0, Bit1, Bit2, Bit3, Bit4, Bit5, Bit6, Bit7, Bit8, Bit9, Bit10, Bit11})
SetUserParam(0, 60, output)