No, they are not subject to the CPR:
Cables acc. CPR meet high requirements for their behavior in the event of fire (reaction to fire).
The aim is to limit the spread of fire and smoke.
In addition to fire propagation, heat and smoke development, acidity (free from halogens) and dripping of burning particles (and some more) are also defined.
Cables with functional integrity describe the resilience of the entire cable system in the event of a fire (resistance to fire).
The aim is to guarantee the function of safety devices such as alarms, signposts and extinguishing systems even in the event of a fire.
These cables are checked in the system – i.e. including attachment – to see whether there is a short circuit within the required time.
Cables with functional integrity therefore have a completely different objective and are therefore explicitly excluded from the CPR (see DIN EN 50575 Section 1).