Webdyn | mc Help Center

Last modified: 2025-07-15

Set up a Webdyn

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General tips

Have the data source (data logger, etc.) serial number on hand. When entering the serial number, pay attention to uppercase and lowercase letters and empty spaces.
The data source name can be freely selected. For recommendations, see our Naming guideline.
Set the same measuring interval for all data sources in the system to ensure charts are accurately displayed in VCOM. This is used to normalize uneven timestamps and aggregate smaller recorded intervals into larger ones.
To ensure that the data source measuring interval has been set correctly in VCOM, open an imported file in the Data logger overview portlet in VCOM and check the timestamps.
We recommend ticking the check box Automatic device creation to ensure that VCOM automatically creates any new devices found during each data import.
If possible, perform a connection test once you have completed the configuration in both VCOM and the data source.

Data loggers only

For data loggers, update the firmware to the latest version prior to configuration.
For data loggers, any import that uses FTP can also use SFTP. The access data, such as the FTP server address, user name, and password remain identical. Only the port changes from port 21 (FTP) to port 2222 (SFTP).

APIs only

Each day at midnight, VCOM checks for complete data and requests data from the past 7 days. If there are no limitations from the API and the data is available, the gaps will be filled.

Configuration details

Protocol	FTP
File format	CSV
Measuring interval	5 min
Server	Provided during VCOM configuration
Port	21

General setup

\CONFIG\*_daq.ini

DAQ_Period=5

DAQ_PeriodSec=0

DAQ_HeaderOption=1

..

MODBUS_Addr[0]=1

MODBUS_Name[0]=Inverter_Growatt

MODBUS_FileDefName[0]=growatt_60kw.ini

MODBUS_Addr[1]=2

MODBUS_Name[1]=Secure_Elite_300

MODBUS_FileDefName[1]=Secure_Elite_440_446.ini

MODBUS_Addr[2]=3

MODBUS_Name[2]=3-in-1 sensor

MODBUS_FileDefName[2]=Modbus_IMT_Sensor.ini

…

<- must be 1

…

...

<- necessary folder for device config (modbus)

...

…

<- necessary folder for device config (modbus)

...

…

<- necessary folder for device config (modbus)

CONFIG/*_config.ini

ID=704-01

IDFile_Enable=0

INV_Type=0

INV_Name=INV

<- shows serial number, must be inserted in VCOM datalogger configuration

Folder structure for device config files

/DEF/INV/

/DEF/IO/

/DEF/MODBUS/growatt_60kw.ini

/DEF/MODBUS/Secure_Elite_440_446.ini

/DEF/MODBUS/ Modbus_IMT_Sensor.ini

/DEF/TIC/

Folder structure for data files

/DATA/ID/

/DATA/INV/

/DATA/IO/

/DATA/MODBUS/WD*.csv.gz

/DATA/TIC/

Adapt the meter scale factor

If necessary, the scale factor can be adapted in the meter config file. In our example, the file is called "Secure_Elite_440_446.ini".

...

Modbus_VariablesTables={

# Description des champs

# varIndex;varReqIndex;varName;varType;varSigned;varPosition;varOption1;varOption2;varCoeffA;varCoeffB,varUnit,varAction;6

...

19;19;3 phase active power;8;2;1;;;1;0;kW;4

20;20;R phase reactive power;8;2;1;;;1;0;kVAR;4

21;21;Y phase reactive power;8;2;1;;;1;0;kVAR;4

22;22;B phase reactive power;8;2;1;;;1;0;kVAR;4

23;23;3 phase reactive power;8;2;1;;;1;0;kVAR;4

24;24;R phase apparent power;8;2;1;;;1;0;kVA;4

25;25;Y phase apparent power;8;2;1;;;1;0;kVA;4

26;26;B phase apparent power;8;2;1;;;1;0;kVA;4

27;27;3 phase apparent power;8;2;1;;;1;0;kVA;4

28;28;Frequency;8;2;1;;;1;0;Hz;4

29;29;Active Total import;8;2;1;;;1;0;kWh;4

30;30;Active Total Export;8;2;1;;;1;0;kWh;4

.....

The factor can be changed in column 9 varCoeffA:

Example: Active power

`19;19;3 phase active power;8;2;1;;;1;0;kW;4`

Change factor from 1 to 0.001 (for conversion from W to kW)

19;19;3 phase active power;8;2;1;;;0.001;0;kW;4

Example: Active energy

`30;30;Active Total Export;8;2;1;;;1;0;kWh;4`

Change factor from 1 to 0.001 (for conversion from Wh to kWh)

`30;30;Active Total Export;8;2;1;;;0;0.001;kWh;4`

Configuration: VCOM

Set the same measuring interval for all data loggers in the system to ensure accurate chart display in VCOM.
Copy the FTP access data provided by VCOM and insert it into the datalogger configuration.
Perform a communication test.

webdyn vcom-20241108-122336.jpeg — Configure Webdyn in VCOM