The 'Reset Device' command in ETS performs a software restart of a KNX device without erasing its individual address or its application configuration.
True
Reset Device = warm restart: the device loses its runtime state (RAM), reinitialises its timers, Cyclic Send and counters, but preserves its individual address, application program, ETS parameters, and Group Address to Group Object bindings. It is useful to force the re-emission of initial values (cyclic send after a crash), to test a specific power-up behaviour, or to unstick a device frozen in an inconsistent state without having to reload the configuration. Not to be confused with Unload All (full decommissioning) or with simply switching off mains power.
Use Reset Device before troubleshooting a misbehaving actuator — if the symptom disappears after a reset, the fault is a runtime glitch rather than a configuration mistake, and ETS download will not fix it.
Keep going with the full KNX Basic bank
Keep going with the full KNX Basic bank: unlimited timed mock exams, detailed answers, history. From €19 (one-time payment).
See pricing — from €19 →See the 9 other KNX Basic practice questions
Related questions
- On how many bits is the Group Address encoded inside a KNX TP1 telegram?2. TP Topology · Kodierung der Gruppenadresse
- The Group Address space in KNX TP1 allows up to 65 536 different Group Addresses (2^16).2. TP Topology · Adressraum Gruppenadressen
- Within a KNX area, the maximum number of Line Couplers is 15, one per subsidiary line.2. TP Topology · Bereichsbegrenzungen
- A single Group Object can be associated simultaneously with several Group Addresses in ETS, which is typically used so that an actuator reacts to several commands (e.g. individual command + zone command + scene).7. ETS Programming · Multi-Binding
- Activating Data Secure on a Group Address adds a per-telegram overhead (authentication and encryption) that reduces the usable application payload.9. KNX Secure · Data-Secure-Overhead