Separable assembly of thermal energy meter

The present disclosure refers to a separable component (11, 13, 15, 17) of a thermal energy meter (9) for determining consumption of thermal energy provided by a fluid flow through a pipe (3, 7), wherein the component (11, 13, 15, 17) comprises a communication interface that is releasably connectable by cable (19, 21, 23) to another component (11, 13, 15, 17) of the thermal energy meter (9), characterised in that the communication interface is configured to selectively communicate with said other component (11, 13, 15, 17) in a default communication mode (ANA) and an advanced communication mode (DIG).