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I would like to create a Modbus RTU Channel dynamically, without graphical Modbus Configurator.
I created 'Modbus_COM' / 'Modbus_Master_COM_Port' / 'Modbus_Slave_COM_Port' in my codesys project, but channels are defined in a configuration file, so they will be created in the program.
If it's possible, how can I do that ?
If not, I also tried ModbusRequest function, but it doesn't work (MB_ErrorCodes = 255).
Have someone an example of this kind of project, and explanations of how function is used ?
Thank you,
Rémi
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Hi,
I would like to create a Modbus RTU Channel dynamically, without graphical Modbus Configurator.
I created 'Modbus_COM' / 'Modbus_Master_COM_Port' / 'Modbus_Slave_COM_Port' in my codesys project, but channels are defined in a configuration file, so they will be created in the program.
If it's possible, how can I do that ?
If not, I also tried ModbusRequest function, but it doesn't work (MB_ErrorCodes = 255).
Have someone an example of this kind of project, and explanations of how function is used ?
Thank you,
Rémi