# List of automation protocols

This is a list of communication protocols used for the automation of processes (industrial or otherwise), such as for building automation, power-system automation, automatic meter reading, and vehicular automation.

## Process automation protocols

* AS-i – Actuator-sensor interface, a low level 2-wire bus establishing power and communications to basic digital and analog devices
* BSAP – Bristol Standard Asynchronous Protocol, developed by Bristol Babcock Inc.
* CC-Link Industrial Networks – Supported by the CLPA
* CIP (Common Industrial Protocol) – can be treated as application layer common to DeviceNet, CompoNet, ControlNet and EtherNet/IP
* ControlNet – an implementation of CIP, originally by Allen-Bradley
* DeviceNet – an implementation of CIP, originally by Allen-Bradley
* DF-1 - used by Allen-Bradley ControlLogix, CompactLogix, PLC-5, SLC-500, and MicroLogix class devices
* DNP3 - a protocol used to communicate by industrial control and utility SCADA systems
* DirectNet – Koyo / Automation Direct proprietary, yet documented PLC interface
* EtherCAT
* Ethernet Global Data (EGD) – GE Fanuc PLCs (see also SRTP)
* EtherNet/IP – IP stands for "Industrial Protocol". An implementation of CIP, originally created by Rockwell Automation
* Ethernet Powerlink – an open protocol managed by the Ethernet POWERLINK Standardization Group (EPSG).
* FINS, Omron's protocol for communication over several networks, including Ethernet.
* FOUNDATION fieldbus – H1 & HSE
* HART Protocol
* HostLink Protocol, Omron's protocol for communication over serial links.
* Interbus, Phoenix Contact's protocol for communication over serial links, now part of PROFINET IO
* MECHATROLINK – open protocol originally developed by Yaskawa, supported by the MMA
* MelsecNet, and MelsecNet II, /B, and /H, supported by Mitsubishi Electric.
* Modbus PEMEX
* Modbus Plus
* Modbus RTU or ASCII or TCP
* MPI – Multi Point Interface
* OSGP – The Open Smart Grid Protocol, a widely use protocol for smart grid devices built on ISO/IEC 14908.1
* OpenADR – Open Automated Demand Response; protocol to manage electricity consuming/controlling devices
* Optomux – Serial (RS-422/485) network protocol originally developed by Opto 22 in 1982. The protocol was openly documented and over time used for industrial automation applications.
* PieP – An Open Fieldbus Protocol
* Profibus – by PROFIBUS & PROFINET International (PI)
* PROFINET - by PROFIBUS & PROFINET International (PI)
* RAPIEnet – Real-time Automation Protocols for Industrial Ethernet
* Honeywell SDS – Smart Distributed System – Originally developed by Honeywell. Currently supported by Holjeron.
* SERCOS III, Ethernet-based version of SERCOS real-time interface standard
* SERCOS interface, Open Protocol for hard real-time control of motion and I/O
* GE SRTP – GE Fanuc PLCs
* Sinec H1 – Siemens
* SynqNet – Danaher
* TTEthernet – TTTech

## Industrial control system protocols

* Data Distribution Service from the Object Management Group
* EPICS Channel Access and PV Access (PVA), particle accelerator control system framework
* MTConnect
* OPC Unified Architecture
* Open Platform Communications, formerly OLE for process control

## Building automation protocols

* 1-Wire – from Dallas/Maxim
* BACnet – for Building Automation and Control networks, maintained by ASHRAE Committee SSPC 135.
* BatiBUS - merged to KNX
* C-Bus Clipsal Integrated Systems Main Proprietary Protocol
* CC-Link Industrial Networks, supported by Mitsubishi Electric
* DALI - Digital Addressable Lighting Interface specified in IEC 62386.
* DSI - Digital Serial Interface for the controlling of lighting in building, precursor to DALI.
* Dynet - lighting and automation control protocol developed in Sydney, Australia by the company Dynalite
* EnOcean – Low Power Wireless protocol for energy harvesting and very lower power devices.
* European Home Systems Protocol (EHS) - merged to KNX
* European Installation Bus (EIB) named also Instabus - merged to KNX
* INSTEON - SmartHome Labs Pro New 2-way Protocol based on Power-BUS.
* KNX – Standard for building control. Previously Batibus/EHS/EIB
* LonTalk – protocol for LonWorks technology by Echelon Corporation
* Modbus RTU or ASCII or TCP
* oBIX - Open Building Information Exchange is a standard for RESTful Web Services-based interfaces to building control systems developed by OASIS.
* UPB - 2-way Peer to Peer Protocol
* VSCP - Very Simple Control Protocol is a free protocol with main focus on building- or home-automation
* xAP – Open protocol
* X10 – Open standard for communication among electronic devices used for home automation (domotics)
* Z-Wave - Wireless RF Protocol
* Zigbee – Open protocol for Mesh Networks

## Power system automation protocols

* DNP3 – Distributed Network Protocol
* IEC 60870-5
* IEC 61850
* IEC 62351 – Security for IEC 60870, 61850, DNP3 & ICCP protocols

## Automatic meter reading protocols

* ANSI C12.18
* DLMS/IEC 62056
* IEC 61107
* M-Bus
* OMS
* Zigbee Smart Energy 2.0
* Modbus
* ANSI C12.21
* ANSI C12.22

## Automobile / Vehicle protocol buses

* Controller Area Network (CAN) – an inexpensive low-speed serial bus for interconnecting automotive components
* FlexRay – a general purpose high-speed protocol with safety-critical features
* IDB-1394
* IEBus
* J1708 – RS-485 based SAE specification used in commercial vehicles, agriculture, and heavy equipment.
* J1939 and ISO11783 – an adaptation of CAN for agricultural and commercial vehicles
* Keyword Protocol 2000 (KWP2000) – a protocol for automotive diagnostic devices (runs either on a serial line or over CAN)
* Local Interconnect Network (LIN) – a very low cost in-vehicle sub-network
* Media Oriented Systems Transport (MOST) – a high-speed multimedia interface
* Vehicle Area Network (VAN)
* UAVCAN - a lightweight protocol for in-vehicle communication over CAN or Ethernet