Phoinix,
The TOT.T value I assume could be linear then again it may not be!
It is different between each turbomachinery module. That is why the DCU or confirmation box needs to stay with the turbomachinery module. This data is loaded into the EECU/FADEC at power up.
The STATUS PAGE is for maintenance practice so that you can easily determine that the values have been loaded. It is also used for certain rigging functions.