XAP Home Automation protocol

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xAP is an open protocol used for home automation which supports integration of telemetry and control devices primarily within the home.[1] Common communications networks include RS-232, RS-485, Ethernet and wireless. The xAP protocol exclusively uses broadcast messages.[1] xAP receivers listen to all broadcast messages and read the message header to verify whether the message is of its interest.[1] The xAP protocol has the following key advantages:[1]

* It makes use of existing infrastructure wherever possible (for example it can co-exist with various physical layers like RS-232 or wireless LAN)
* It can intercommunicate between multiple networks like RS-232 or wireless by just deploying a physical bridge.
* xAP does not require any central controller. All nodes can act as sender or receiver.
* xAP system provides distributed and fault tolerant architecture which allows continuous operation of systems even in the event of component failures.

## See also

* xPL Protocol \- A substantially similar home automation protocol

## References

1. ↑ 1.0 1.1 1.2 1.3 Fioretti, F.; Pierleoni, P.; Pasqualini, S. (17–20 February 2008). "On use of xAP Home Automation Protocol for networking in critical environments". 10th International Conference on Advanced Communication Technology (ICACT 2008). Gangwon, Korea. pp. 1960–1965. doi:10.1109/ICACT.2008.4494171. ISBN 978-89-5519-136-3. https://www.researchgate.net/profile/Paola-Pierleoni/publication/4325507_On_use_of_xAP_Home_Automation_Protocol_for_networking_in_critical_environments/links/55380c310cf226723ab614d6/On-use-of-xAP-Home-Automation-Protocol-for-networking-in-critical-environments.pdf. Retrieved 12 June 2025.

## External links

* xAP Protocol Definition
* xAP Forum

* v
* t
* e

Automation protocols

Process automation|

* AS-i
* BSAP
* CC-Link Industrial Networks
* CIP
* CAN bus
* CANopen
* DeviceNet
* ControlNet
* DF-1
* DirectNET
* EtherCAT
* Ethernet Global Data (EGD)
* Ethernet Powerlink
* EtherNet/IP
* Factory Instrumentation Protocol
* FINS
* FOUNDATION fieldbus
* H1
* HSE
* GE SRTP
* HART Protocol
* Honeywell SDS
* HostLink
* INTERBUS
* IO-Link
* MECHATROLINK
* MelsecNet
* Modbus
* Optomux
* PieP
* Ethernet Powerlink
* Profibus
* PROFINET IO
* RAPIEnet
* SERCOS interface
* SERCOS III
* Sinec H1
* SynqNet
* TTEthernet

Industrial control system|

* MTConnect
* OPC DA
* OPC HDA
* OPC UA

Building automation|

* 1-Wire
* BACnet
* C-Bus
* CEBus
* DALI
* DSI
* DyNet
* Factory Instrumentation Protocol
* KNX
* LonTalk
* Modbus
* oBIX
* VSCP
* X10
* xAP
* xPL
* ZigBee

Power-system automation|

* IEC 60870
* IEC 60870-5
* IEC 60870-6
* DNP3
* Factory Instrumentation Protocol
* IEC 61850
* IEC 62351
* Modbus
* Profibus

Automatic meter reading|

* ANSI C12.18
* IEC 61107
* DLMS/IEC 62056
* M-Bus
* Modbus
* ZigBee

Automobile / Vehicle|

* AFDX
* ARINC 429
* CAN bus
* ARINC 825
* SAE J1939
* NMEA 2000
* FMS
* Factory Instrumentation Protocol
* FlexRay
* IEBus
* J1587
* J1708
* Keyword Protocol 2000
* Unified Diagnostic Services
* LIN
* MOST
* VAN
* UAVCAN

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