save time, be consistent with DPT
Using KNX for most advanced functions, in HVAC, Energy, and Security, using an integrated approach requires very good handling of Group Addresses DPT. Especially when you are trying to connect different brands.
I have been using KNX for more than 25 years. I support the e-dreams network of integrators. Here is the reference DPT we use most of the time. For free!