Glossary term
ACK
communicationIntermediate
Also known as
Acknowledgment
Definition
Positive acknowledgement sent by the receiver of a correctly received telegram. Link-layer mechanism that lets the sender know whether its telegram was received.
Questions using this term
- The ETS Bus Monitor displays telegrams at the raw frame level, whereas the Group Monitor presents them filtered and formatted at the Group Address level.8. Diagnostics · Monitoring-Werkzeuge
- In an installation predating 2018, a maximum of 64 sensors, actuators, line couplers and backbone couplers can be connected to a TP main line.2. TP Topology · Offizielle Musterprüfung 4
- In KNXnet/IP Routing, several IP Routers on the same VLAN share traffic via multicast 224.0.23.12, forming an IP backbone with no master-slave hierarchy between the routers.1. Couplers · IP Routing vs. Tunneling
- The emergency lighting of a building CANNOT be driven by KNX alone: it must comply with dedicated standards (NF EN 1838, EN 50172) that require a self-contained system with a backup battery.5. Lighting Control · Sicherheitsbeleuchtung
- In KNX, a "Technical Alarm" (water leak, smoke detection, equipment fault) is distinct from an "Intrusion Alarm" (break-in), because the EN 50131 standards require a separate certified system for anti-intrusion alarms.6. Security Technology · Einbruch vs. Technische Meldung
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