For some of our customers there is a need for manual manipulating charging settings via modbus. Bellow you can find attached python script, that should be a good start what can you do with modbus on our Inch products. Script is written, with both Duo and Inch, in mind.
Prerequsites:
PC with Windows/Linux, MacOS or other device capable running Python
Python 3.(x) and above installed - Python 3.9
Modbus module - https://github.com/riptideio/pymodbus
Python editor - we suggest https://code.visualstudio.com/
Installation:
First you need to install Python and add it to you path. On Windows path is found in Enviroment variables settings.
Then, using pip, you must install pymodbus library. Once your python was added to path you can use command
pip install -U pymodbus
In script there is a line that sets charger IP address. (Line 27), and it looks like following
clientIP="192.168.1.250" #Charger's IP address
Change IP address accordingly to your charger.
Running script:
Script can be easily run using python executable from command prompt.
For reading Modbus registers use
python INCH_modbus_read.py
And for writing Modbus registers use
python INCH_modbus_write.py
When writing modbus, scripts asks for which connector on Inch Duo
Limitations:
Station is figuring out minimal and maximum current during first 45 seconds, thus it is impossible to set current point.