XAP Home Automation protocol

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xAP is an open protocol used for home automation and supports integration of telemetry and control devices primarily within the home. Common communications networks include RS-232, RS-485, Ethernet and wireless. xAP protocol always uses broadcast for sending the messages. All the receivers listens to the message and introspects the message header to verify whether the message is of its interest. xAP protocol has the following key advantages.

* 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 even 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

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* xPL Protocol \- A substantially similar home automation protocol

## External links

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* xAP Protocol Definition
* xAP Forum

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* 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
* Process Image Exchange Protocol (PieP)
* PROFIBUS
* PROFINET
* RAPIEnet
* SERCOS interface
* SERCOS III
* Sinec H1
* SynqNet
* TTEthernet

Industrial control system|

* MTConnect
* OPC DA
* OPC HDA
* OPC UA

Building automation|

* 1-Wire
* BACnet
* BatiBUS
* C-Bus
* CEBus
* DALI
* DSI
* DyNet
* EnOcean
* EHS
* EIB
* FIP
* KNX
* LonTalk
* Modbus
* OpenTherm
* oBIX
* VSCP
* X10
* xAP
* xPL
* Z-Wave
* 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
* SENT (SAE J2716)
* VAN
* Cyphal

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