These two function blocks handle the encoding and decoding of KNX thermostat setpoints across different operating modes, using the KNX Data Point Type (DPT) 275.100 (8-byte float encoding).

This block combines four individual 2-byte floating-point values (DPT9.xxx), corresponding to different thermostat operating modes, into a single 8-byte KNX datapoint (DPT275.100).

This block performs the reverse operation: it takes an 8-byte DPT275.100 input and extracts the individual 2-byte setpoints for each operating mode.