HCC/S 2.x.x.1: What is the difference between status pump relay and pump operating state?

The status pump relay is the relay output of the device (HCC/S). The pump operating state is a potential-free contact of the pump.
This means that the relay of the HCC/S may be closed and the pump is not active at all due to, for example, a line break.

Note: The pump must support this contact or function.

Tags: ClimaECO, HVAC, KNX