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If you want to send a KNX telegram, you can also use the sub fields. For example of DPT 238.600, if you want to request the status of a DALI ballast, you have to set the sub field .Address to the corresponding address, and .LF and .BF to False. Afterwards, when you set the “- SEND” item to True, the BMS server calculates the value from the different sub fields and then it sends the calculated value to the KNX bus.
I hope this helps you to fulfill your requirements. If you need further help, please contact me.